Wrong ref set for cache on release.type.published with explicit branch checkout

I have a workflow that is triggered on release

on:
  release:
    types: [published]

And I set ref to main branch explicitly for checkout action, because cache with tags’ refs are cannot be reused for feature branches, see #556 . Checking out for main branch is ok for me as it’s the same code version as the last release.

      - name: Checkout main branch
        uses: actions/checkout@v3
        with:
          ref: main

Anyway the cache is created with the tag ref

curl \
  -H "Accept: application/vnd.github.v3+json" \
  -H "Authorization: token MY_TOKEN" \
  https://api.github.com/repos/org/repo/actions/caches

{
  "total_count": 5,
  "actions_caches": [
    {
      "id": 8,
      "ref": "refs/tags/<TAG>",
      "key": "MY_KEY",
      "version": "...",
      "last_accessed_at": "2022-07-04T11:58:15.810000000Z",
      "created_at": "2022-07-04T11:58:15.810000000Z",
      "size_in_bytes": 76343
    },
    ...
  ]
}

And for the feature branch the cache is not visible anyway:

Run actions/cache@v3
Cache not found for input keys: MY_KEY

[bishal-pdMSFT]

The doc section is updated to call out the scope restrictions more clearly. Also added a sentence about tags scope.

[bishal-pdMSFT]

Got it. It wouldn’t harm to mention this explicitly in the docs. Let me plan for that.