For ASDF, I have a CI workflow that builds the documentation. This build fails on a merge request from another user.

Here's the job: https://gitlab.common-lisp.net/NicoSimoski/asdf/-/jobs/89084

Here's the relevant error message:

Getting source from Git repository 00:01
Fetching changes...
Initialized empty Git repository in /builds/NicoSimoski/asdf/.git/
Created fresh repository.
fatal: unable to access 'https://gitlab.common-lisp.net/NicoSimoski/asdf.git/': The requested URL returned error: 500

Any idea why this would be happening? Seems like the runner can't get at this fork, even though it's public. I don't have any difficulty seeing https://gitlab.common-lisp.net/NicoSimoski/asdf

Is this something about GitLab runner permissions?

Or does his fork need to have GitLab actions enabled?

Thanks for any advice