Steps can't reference git repositories using tags

Problem

Steps can't use Git annotated tags to load a step from a Git repository. Lightweight tags work.

Example

The following job succeeds:

my-job:
  run:
    - name: finish without error
      step: gitlab.com/cam_swords_steps/exit@main
      inputs:
        exit_code: 0

The following job fails with the error message fetching commit object: object not found, even though there is a v0 tag.

my-job:
  run:
    - name: finish without error
      step: gitlab.com/cam_swords_steps/exit@v0
      inputs:
        exit_code: 0

The difference between a lightweight and annotated Git tag

Git tags created with a message are annotated tags. Tags created without a message a lightweight tags.

Proposal

Lightweight tags should be able to be used when a step references a Git repository.