infra/config/recipes.cfg

{
  "api_version": 2,
  "deps": {
    "recipe_engine": {
      "branch": "master",
      "revision": "63fd5fef30ebf0db04266b4f4723f77838979365",
      "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
    }
  },
  "project_id": "infra"
}