Roll recipe dependencies (nontrivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (build, depot_tools, fuchsia) into this repository.

Please review the expectation changes, and LGTM+CQ.

build:
  https://crrev.com/f0a0a2dd5849af2036bcb06f0435dc8002334224 (svenzheng@chromium.org)
    Revert "Adds linux-ash-chrome-builder-rel in recipe_modules"
  https://crrev.com/188672aa374626b5a7aa80c22741a83152ebe0ce (svenzheng@chromium.org)
    [lacros] Recipe adds linux-ash-chromium-builder-fyi-rel
depot_tools:
  https://crrev.com/3e5d86a2375ad13321f225166444419fcf1f6b08 (gbeaty@chromium.org)
    Generate revisions in json output for refs/ and origin/.
  https://crrev.com/a8d0173571cd8880189a993c526173a6fb2f333f (vapier@chromium.org)
    cros: raise python version requirement to 3.6
fuchsia:
  https://crrev.com/587cff57a8a50c8d4b413f3c4ca1662d39be630d (garymm@google.com)
    Revert "[testing] pass -swarming-host to tefmocheck"
  https://crrev.com/3ef3e7bab7b6156739da9a4be46f833bf9eeb929 (garymm@google.com)
    [build] Don't run affected_tests for integration repo

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.

R=godofredoc@google.com, keyonghan@google.com, wutong@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I60c298b949f69898d0f3a3d98b1077952e44a8a6
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/4901
Commit-Queue: flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com <flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Godofredo Contreras <godofredoc@google.com>
Reviewed-by: Godofredo Contreras <godofredoc@google.com>
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index 8467622..0fea94e 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -23,17 +23,17 @@
   "deps": {
     "build": {
       "branch": "refs/heads/master",
-      "revision": "57b025298deb13e7af1ce0bc07bab76716e076ff",
+      "revision": "441733a48a360b0c267ede1834be8c5927761a41",
       "url": "https://chromium.googlesource.com/chromium/tools/build"
     },
     "depot_tools": {
       "branch": "refs/heads/master",
-      "revision": "7291750ae258773233f671ae7c93a5bc4a388831",
+      "revision": "a8d0173571cd8880189a993c526173a6fb2f333f",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "fuchsia": {
       "branch": "refs/heads/master",
-      "revision": "5b19e09084e04aa23adf713780ac3bce1f43f038",
+      "revision": "3ef3e7bab7b6156739da9a4be46f833bf9eeb929",
       "url": "https://fuchsia.googlesource.com/infra/recipes.git"
     },
     "recipe_engine": {
diff --git a/recipe_modules/repo_util/examples/full.expected/first_bot_update_failed.json b/recipe_modules/repo_util/examples/full.expected/first_bot_update_failed.json
index c457fce..4bca2c6 100644
--- a/recipe_modules/repo_util/examples/full.expected/first_bot_update_failed.json
+++ b/recipe_modules/repo_util/examples/full.expected/first_bot_update_failed.json
@@ -426,13 +426,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -441,7 +441,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -450,7 +450,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_EXCEPTION@@@"
     ]
@@ -530,13 +530,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -545,7 +545,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -554,7 +554,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine.expected/clobber.json b/recipes/engine.expected/clobber.json
index 07295c8..4ba4eea 100644
--- a/recipes/engine.expected/clobber.json
+++ b/recipes/engine.expected/clobber.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine.expected/first_bot_update_failed.json b/recipes/engine.expected/first_bot_update_failed.json
index 6490228..9011e93 100644
--- a/recipes/engine.expected/first_bot_update_failed.json
+++ b/recipes/engine.expected/first_bot_update_failed.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_EXCEPTION@@@"
     ]
@@ -244,13 +244,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -259,7 +259,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -268,7 +268,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine.expected/pull_request.json b/recipes/engine.expected/pull_request.json
index ed2376f..7dd9e34 100644
--- a/recipes/engine.expected/pull_request.json
+++ b/recipes/engine.expected/pull_request.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine_1_20_0.expected/clobber.json b/recipes/engine_1_20_0.expected/clobber.json
index 7ba810a..1db57ad 100644
--- a/recipes/engine_1_20_0.expected/clobber.json
+++ b/recipes/engine_1_20_0.expected/clobber.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine_1_20_0.expected/first_bot_update_failed.json b/recipes/engine_1_20_0.expected/first_bot_update_failed.json
index 3921943..747faa4 100644
--- a/recipes/engine_1_20_0.expected/first_bot_update_failed.json
+++ b/recipes/engine_1_20_0.expected/first_bot_update_failed.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_EXCEPTION@@@"
     ]
@@ -244,13 +244,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -259,7 +259,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -268,7 +268,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine_1_20_0.expected/pull_request.json b/recipes/engine_1_20_0.expected/pull_request.json
index 2bf5016..32e4918 100644
--- a/recipes/engine_1_20_0.expected/pull_request.json
+++ b/recipes/engine_1_20_0.expected/pull_request.json
@@ -138,13 +138,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -162,7 +162,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine_v1_17_0.expected/clobber.json b/recipes/engine_v1_17_0.expected/clobber.json
index 8bd9f21..26f07aa 100644
--- a/recipes/engine_v1_17_0.expected/clobber.json
+++ b/recipes/engine_v1_17_0.expected/clobber.json
@@ -130,13 +130,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -145,7 +145,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -154,7 +154,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/engine_v1_17_0.expected/pull_request.json b/recipes/engine_v1_17_0.expected/pull_request.json
index 6fdd9e0..c186c31 100644
--- a/recipes/engine_v1_17_0.expected/pull_request.json
+++ b/recipes/engine_v1_17_0.expected/pull_request.json
@@ -117,13 +117,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -132,7 +132,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -141,7 +141,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/femu_test.expected/no_zircon_file.json b/recipes/femu_test.expected/no_zircon_file.json
index fe89b89..5b285a7 100644
--- a/recipes/femu_test.expected/no_zircon_file.json
+++ b/recipes/femu_test.expected/no_zircon_file.json
@@ -125,13 +125,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -140,7 +140,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -149,7 +149,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/femu_test.expected/start_femu_with_vdl.json b/recipes/femu_test.expected/start_femu_with_vdl.json
index 2290b6e..5a027ad 100644
--- a/recipes/femu_test.expected/start_femu_with_vdl.json
+++ b/recipes/femu_test.expected/start_femu_with_vdl.json
@@ -125,13 +125,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -140,7 +140,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -149,7 +149,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/web_engine.expected/linux-pre-submit.json b/recipes/web_engine.expected/linux-pre-submit.json
index 2cbb31d..e149752 100644
--- a/recipes/web_engine.expected/linux-pre-submit.json
+++ b/recipes/web_engine.expected/linux-pre-submit.json
@@ -149,13 +149,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -164,7 +164,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -173,7 +173,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/web_engine_1_20_0.expected/linux-pre-submit.json b/recipes/web_engine_1_20_0.expected/linux-pre-submit.json
index bf297c9..d354e55 100644
--- a/recipes/web_engine_1_20_0.expected/linux-pre-submit.json
+++ b/recipes/web_engine_1_20_0.expected/linux-pre-submit.json
@@ -149,13 +149,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -164,7 +164,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -173,7 +173,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },
diff --git a/recipes/web_engine_v1_17_0.expected/linux-pre-submit.json b/recipes/web_engine_v1_17_0.expected/linux-pre-submit.json
index 5c81264..b0fcc5c 100644
--- a/recipes/web_engine_v1_17_0.expected/linux-pre-submit.json
+++ b/recipes/web_engine_v1_17_0.expected/linux-pre-submit.json
@@ -129,13 +129,13 @@
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/flutter\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"refs/pull/1/head\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"a63681edc0f69a72604596b16c7986513e809995\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/master@{#84512}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
@@ -144,7 +144,7 @@
       "@@@STEP_LOG_LINE@json.output@      \"src/flutter\": {@@@",
       "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
       "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/src/flutter.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"refs/pull/1/head\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@STEP_LOG_LINE@json.output@        }@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
@@ -153,7 +153,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"refs/pull/1/head\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"a63681edc0f69a72604596b16c7986513e809995\"@@@",
       "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/master@{#84512}\"@@@"
     ]
   },