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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
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    },
    "name": "Checkout flutter/flutter (2).git clean",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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  },
  {
    "cmd": [
      "git",
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      "sync"
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    "cwd": "[START_DIR]/flutter",
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    "luci_context": {
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        "name": "project:ci"
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      "resultdb": {
        "current_invocation": {
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        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/flutter (2).submodule sync",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "submodule",
      "update",
      "--init",
      "--recursive"
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    "cwd": "[START_DIR]/flutter",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/flutter (2).submodule update",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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  },
  {
    "cmd": [
      "git",
      "rev-parse",
      "HEAD"
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    "cwd": "[START_DIR]/flutter",
    "infra_step": true,
    "luci_context": {
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        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "git rev-parse"
  },
  {
    "cmd": [],
    "name": "Checkout source code"
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "rmcontents",
      "[START_DIR]"
    ],
    "env_suffixes": {
      "DEPOT_TOOLS_UPDATE": [
        "0"
      ],
      "PATH": [
        "RECIPE_REPO[depot_tools]"
      ]
    },
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
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    },
    "name": "Checkout source code.Clobber cache",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [
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      "rmtree",
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    "env_suffixes": {
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      "PATH": [
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          "name": "invocations/build:8945511751514863184",
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        "hostname": "rdbhost"
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    "name": "Checkout source code.Clobber git cache",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [
      "vpython3",
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      "--json-output",
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      "ensure-directory",
      "--mode",
      "0777",
      "[START_DIR]"
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    "env_suffixes": {
      "DEPOT_TOOLS_UPDATE": [
        "0"
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      "PATH": [
        "RECIPE_REPO[depot_tools]"
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    "infra_step": true,
    "luci_context": {
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        "hostname": "rdbhost"
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    "name": "Checkout source code.Ensure checkout cache",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [
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      "cache_dir = '[CACHE]/git'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': False, 'name': 'monorepo', 'url': 'https://dart.googlesource.com/monorepo'}]",
      "--revision_mapping_file",
      "{\"got_buildroot_revision\": \"engine/src\", \"got_dart_revision\": \"engine/src/third_party/dart\", \"got_engine_revision\": \"engine/src/flutter\", \"got_flutter_revision\": \"flutter\", \"got_monorepo_revision\": \"monorepo\"}",
      "--git-cache-dir",
      "[CACHE]/git",
      "--cleanup-dir",
      "[CLEANUP]/bot_update",
      "--output_json",
      "/path/to/tmp/json",
      "--revision",
      "monorepo@2d72510e447ab60a9728aeea2362d8be2cbd7789",
      "--refs",
      "refs/heads/main"
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    "env": {
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      "GIT_HTTP_LOW_SPEED_LIMIT": "102400",
      "GIT_HTTP_LOW_SPEED_TIME": "1800"
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    "env_suffixes": {
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        "0"
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      "PATH": [
        "RECIPE_REPO[depot_tools]",
        "RECIPE_REPO[depot_tools]"
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    "infra_step": true,
    "luci_context": {
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        "name": "project:ci"
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          "update_token": "token"
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        "hostname": "rdbhost"
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    },
    "name": "Checkout source code.bot_update",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_TEXT@Some step text@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
      "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"monorepo\": \"2d72510e447ab60a9728aeea2362d8be2cbd7789\"@@@",
      "@@@STEP_LOG_LINE@json.output@  }, @@@",
      "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"engine/src\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/engine/src.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"851705163d0a071411a2461348b2fa0f4365dd2b\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"engine/src/flutter\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/engine/src/flutter.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"8d715353df333b3d997121c3d17cfe043f0a33ee\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"engine/src/third_party/dart\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/engine/src/third_party/dart.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"56b272d88fce292881d9d6a89d1a88b53f868a7f\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"flutter\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/flutter.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"ff25d17873bba4bc564d8c7217280aa254ed4541\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"monorepo\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/monorepo.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"2d72510e447ab60a9728aeea2362d8be2cbd7789\"@@@",
      "@@@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\": \"monorepo\", @@@",
      "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_buildroot_revision\": \"851705163d0a071411a2461348b2fa0f4365dd2b\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_buildroot_revision_cp\": \"refs/heads/main@{#278358}\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_dart_revision\": \"56b272d88fce292881d9d6a89d1a88b53f868a7f\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_dart_revision_cp\": \"refs/heads/main@{#135384}\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision\": \"8d715353df333b3d997121c3d17cfe043f0a33ee\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_engine_revision_cp\": \"refs/heads/main@{#14355}\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision\": \"ff25d17873bba4bc564d8c7217280aa254ed4541\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision_cp\": \"refs/heads/main@{#268536}\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_monorepo_revision\": \"2d72510e447ab60a9728aeea2362d8be2cbd7789\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_monorepo_revision_cp\": \"refs/heads/main@{#255931}\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"got_revision\": \"46cec4dbb087a7b43490e8c82b6899fa32937bd9\"@@@",
      "@@@STEP_LOG_LINE@json.output@  }, @@@",
      "@@@STEP_LOG_LINE@json.output@  \"root\": \"monorepo\", @@@",
      "@@@STEP_LOG_LINE@json.output@  \"source_manifest\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"directories\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"engine/src\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/engine/src.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"851705163d0a071411a2461348b2fa0f4365dd2b\"@@@",
      "@@@STEP_LOG_LINE@json.output@        }@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      \"engine/src/flutter\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/engine/src/flutter.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"8d715353df333b3d997121c3d17cfe043f0a33ee\"@@@",
      "@@@STEP_LOG_LINE@json.output@        }@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      \"engine/src/third_party/dart\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/engine/src/third_party/dart.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"56b272d88fce292881d9d6a89d1a88b53f868a7f\"@@@",
      "@@@STEP_LOG_LINE@json.output@        }@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      \"flutter\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/flutter.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"ff25d17873bba4bc564d8c7217280aa254ed4541\"@@@",
      "@@@STEP_LOG_LINE@json.output@        }@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      \"monorepo\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"git_checkout\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"repo_url\": \"https://fake.org/monorepo.git\", @@@",
      "@@@STEP_LOG_LINE@json.output@          \"revision\": \"2d72510e447ab60a9728aeea2362d8be2cbd7789\"@@@",
      "@@@STEP_LOG_LINE@json.output@        }@@@",
      "@@@STEP_LOG_LINE@json.output@      }@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"version\": 0@@@",
      "@@@STEP_LOG_LINE@json.output@  }, @@@",
      "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@SET_BUILD_PROPERTY@got_buildroot_revision@\"851705163d0a071411a2461348b2fa0f4365dd2b\"@@@",
      "@@@SET_BUILD_PROPERTY@got_buildroot_revision_cp@\"refs/heads/main@{#278358}\"@@@",
      "@@@SET_BUILD_PROPERTY@got_dart_revision@\"56b272d88fce292881d9d6a89d1a88b53f868a7f\"@@@",
      "@@@SET_BUILD_PROPERTY@got_dart_revision_cp@\"refs/heads/main@{#135384}\"@@@",
      "@@@SET_BUILD_PROPERTY@got_engine_revision@\"8d715353df333b3d997121c3d17cfe043f0a33ee\"@@@",
      "@@@SET_BUILD_PROPERTY@got_engine_revision_cp@\"refs/heads/main@{#14355}\"@@@",
      "@@@SET_BUILD_PROPERTY@got_flutter_revision@\"ff25d17873bba4bc564d8c7217280aa254ed4541\"@@@",
      "@@@SET_BUILD_PROPERTY@got_flutter_revision_cp@\"refs/heads/main@{#268536}\"@@@",
      "@@@SET_BUILD_PROPERTY@got_monorepo_revision@\"2d72510e447ab60a9728aeea2362d8be2cbd7789\"@@@",
      "@@@SET_BUILD_PROPERTY@got_monorepo_revision_cp@\"refs/heads/main@{#255931}\"@@@",
      "@@@SET_BUILD_PROPERTY@got_revision@\"46cec4dbb087a7b43490e8c82b6899fa32937bd9\"@@@"
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    "name": "$result"
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]