name: checkout
description: "Checkout the git repository."
runs:
  using: composite
  steps:
    - run: |
        set -eu
        git init
        git remote add origin "${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}"
        git fetch --no-tags --prune --no-recurse-submodules --depth=1 origin "+${GITHUB_SHA}:${GITHUB_REF}"
        git checkout --force "${GITHUB_REF}"
      shell: sh