action.yml

name: "Checkout"
description: "Checkout limited git history to speed up CI"

runs:
  using: "composite"
  steps:
    - name: Check out the repo
      uses: actions/checkout@v4
      with:
        fetch-depth: 0 # https://github.com/actions/checkout/issues/1471 -> Fetch depth 0 required to actually get tags without using merge to head due to limited support of tag fetching
        # See https://github.blog/2020-12-21-get-up-to-speed-with-partial-clone-and-shallow-clone/
        # and https://github.com/actions/checkout/pull/1396 
        filter: tree:0
        # Due to https://github.com/actions/checkout/issues/1467,
        # tags will get fetched automatically on tag events.
        fetch-tags: ${{ github.event_name != 'release' }}
        # Prevents pulling merged changes from main head
        ref: ${{ github.event.pull_request.head.sha }}