diff --git a/recipes/engine_v2/builder.expected/basic.json b/recipes/engine_v2/builder.expected/basic.json
index c1b10ba..80d9c76 100644
--- a/recipes/engine_v2/builder.expected/basic.json
+++ b/recipes/engine_v2/builder.expected/basic.json
@@ -2221,120 +2221,6 @@
     "name": "generator1"
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "luci-auth",
       "token",
@@ -2988,7 +2874,7 @@
   },
   {
     "cmd": [],
-    "name": "Identify branches (2)"
+    "name": "Identify branches"
   },
   {
     "cmd": [
@@ -3039,7 +2925,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git rev-parse",
+    "name": "Identify branches.git rev-parse",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
@@ -3095,7 +2981,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git branch",
+    "name": "Identify branches.git branch",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
diff --git a/recipes/engine_v2/builder.expected/config_file.json b/recipes/engine_v2/builder.expected/config_file.json
index afd0ad8..f45a9ea 100644
--- a/recipes/engine_v2/builder.expected/config_file.json
+++ b/recipes/engine_v2/builder.expected/config_file.json
@@ -348,120 +348,6 @@
     ]
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "vpython3",
       "-u",
diff --git a/recipes/engine_v2/builder.expected/dart-internal-flutter-success.json b/recipes/engine_v2/builder.expected/dart-internal-flutter-success.json
index ad710e5..3786310 100644
--- a/recipes/engine_v2/builder.expected/dart-internal-flutter-success.json
+++ b/recipes/engine_v2/builder.expected/dart-internal-flutter-success.json
@@ -1418,120 +1418,6 @@
     "name": "generator1"
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "2d72510e447ab60a9728aeea2362d8be2cbd7789"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart-internal:flutter"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "2d72510e447ab60a9728aeea2362d8be2cbd7789"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart-internal:flutter"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "luci-auth",
       "token",
@@ -2236,7 +2122,7 @@
   },
   {
     "cmd": [],
-    "name": "Identify branches (2)"
+    "name": "Identify branches"
   },
   {
     "cmd": [
@@ -2287,7 +2173,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git rev-parse",
+    "name": "Identify branches.git rev-parse",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
@@ -2343,7 +2229,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git branch",
+    "name": "Identify branches.git branch",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
diff --git a/recipes/engine_v2/builder.expected/mac.json b/recipes/engine_v2/builder.expected/mac.json
index c2f0a47..5ef23be 100644
--- a/recipes/engine_v2/builder.expected/mac.json
+++ b/recipes/engine_v2/builder.expected/mac.json
@@ -2598,234 +2598,6 @@
     "name": "generator1"
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "darwin",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "darwin",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "Identify branches (2)"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "darwin",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches (2).git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "darwin",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches (2).git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "luci-auth",
       "token",
@@ -3479,7 +3251,7 @@
   },
   {
     "cmd": [],
-    "name": "Identify branches (3)"
+    "name": "Identify branches"
   },
   {
     "cmd": [
@@ -3530,7 +3302,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (3).git rev-parse",
+    "name": "Identify branches.git rev-parse",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
@@ -3586,7 +3358,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (3).git branch",
+    "name": "Identify branches.git branch",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
diff --git a/recipes/engine_v2/builder.expected/monorepo.json b/recipes/engine_v2/builder.expected/monorepo.json
index 2784e99..0918109 100644
--- a/recipes/engine_v2/builder.expected/monorepo.json
+++ b/recipes/engine_v2/builder.expected/monorepo.json
@@ -2180,118 +2180,6 @@
     "name": "generator1"
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/engine/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/engine/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/engine",
-      "ENGINE_PATH": "[CACHE]/builder/engine",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/engine/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart:ci.sandbox"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/engine/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/engine/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/engine",
-      "ENGINE_PATH": "[CACHE]/builder/engine",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/engine/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart:ci.sandbox"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "luci-auth",
       "token",
@@ -2874,7 +2762,7 @@
   },
   {
     "cmd": [],
-    "name": "Identify branches (2)"
+    "name": "Identify branches"
   },
   {
     "cmd": [
@@ -2924,7 +2812,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git rev-parse",
+    "name": "Identify branches.git rev-parse",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
@@ -2979,7 +2867,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git branch",
+    "name": "Identify branches.git branch",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
diff --git a/recipes/engine_v2/builder.expected/monorepo_tryjob.json b/recipes/engine_v2/builder.expected/monorepo_tryjob.json
index 9fc7268..5f1be98 100644
--- a/recipes/engine_v2/builder.expected/monorepo_tryjob.json
+++ b/recipes/engine_v2/builder.expected/monorepo_tryjob.json
@@ -2267,118 +2267,6 @@
     "name": "generator1"
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/engine/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/engine/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/engine",
-      "ENGINE_PATH": "[CACHE]/builder/engine",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": ""
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/engine/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart:ci.sandbox"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/engine/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/engine/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/engine",
-      "ENGINE_PATH": "[CACHE]/builder/engine",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": ""
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/engine/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "dart:ci.sandbox"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "luci-auth",
       "token",
@@ -2911,7 +2799,7 @@
   },
   {
     "cmd": [],
-    "name": "Identify branches (2)"
+    "name": "Identify branches"
   },
   {
     "cmd": [
@@ -2961,7 +2849,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git rev-parse",
+    "name": "Identify branches.git rev-parse",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
@@ -3016,7 +2904,7 @@
         "hostname": "rdbhost"
       }
     },
-    "name": "Identify branches (2).git branch",
+    "name": "Identify branches.git branch",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
diff --git a/recipes/engine_v2/builder.expected/test_if_skip.json b/recipes/engine_v2/builder.expected/test_if_skip.json
index 5318e78..6fddae7 100644
--- a/recipes/engine_v2/builder.expected/test_if_skip.json
+++ b/recipes/engine_v2/builder.expected/test_if_skip.json
@@ -318,234 +318,6 @@
     ]
   },
   {
-    "cmd": [],
-    "name": "Identify branches"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches.git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "Identify branches (2)"
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches (2).git rev-parse",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "branch",
-      "-a",
-      "--contains",
-      "12345abcde12345abcde12345abcde12345abcde"
-    ],
-    "cwd": "[CACHE]/builder/src",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "ANDROID_SDK_HOME": "[CLEANUP]/tmp_tmp_1",
-      "ANDROID_USER_HOME": "[CLEANUP]/tmp_tmp_1/.android",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "GIT_BRANCH": "",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_CLEANUP": "[CLEANUP]",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux",
-      "REVISION": "abcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "env_suffixes": {
-      "DEPOT_TOOLS_UPDATE": [
-        "0"
-      ],
-      "PATH": [
-        "RECIPE_REPO[depot_tools]"
-      ]
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "flutter:prod"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Identify branches (2).git branch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
     "cmd": [
       "vpython3",
       "-u",
diff --git a/recipes/engine_v2/builder.py b/recipes/engine_v2/builder.py
index eff6378..7123bed 100644
--- a/recipes/engine_v2/builder.py
+++ b/recipes/engine_v2/builder.py
@@ -105,12 +105,9 @@
 
 def run_tests(api, tests, checkout, env, env_prefixes):
   """Runs sub-build tests."""
-  branch = 'main'
-  if checkout and api.repo_util.is_release_candidate_branch(checkout):
-    branch = api.repo_util.release_candidate_branch(checkout)
   # Run local tests in the builder to optimize resource usage.
   for test in tests:
-    if not _should_run_test(test, branch):
+    if not _should_run_test(test, api.buildbucket.gitiles_commit.ref):
       continue
     # Copy and expand env, env_prefixes. This is required to
     # add configuration env variables.
@@ -381,18 +378,6 @@
               'branch1\nbranch2\nremotes/origin/flutter-3.2-candidate.5'
           )
       ),
-      api.step_data(
-          'Identify branches (2).git branch',
-          stdout=api.raw_io.output_text(
-              'branch1\nbranch2\nremotes/origin/flutter-3.2-candidate.5'
-          )
-      ),
-      api.step_data(
-          'Identify branches (3).git branch',
-          stdout=api.raw_io.output_text(
-              'branch1\nbranch2\nremotes/origin/flutter-3.2-candidate.5'
-          )
-      ),
   )
   yield api.test(
       'monorepo',
@@ -462,16 +447,4 @@
           revision='abcd' * 10,
           build_number=123,
       ),
-      api.step_data(
-          'Identify branches.git branch',
-          stdout=api.raw_io.output_text(
-              'branch1\nbranch2\nremotes/origin/flutter-3.2-candidate.5'
-          )
-      ),
-      api.step_data(
-          'Identify branches (2).git branch',
-          stdout=api.raw_io.output_text(
-              'branch1\nbranch2\nremotes/origin/flutter-3.2-candidate.5'
-          )
-      ),
   )