Creating "CI/CD only project" but the GitHub repo is still mirrored

Title. This does not seem right.

I don’t get any builds triggering if I check into the source repo (on GitHub).

My understanding is that the “CI/CD only” option shouldn’t clone/mirror the repo and check-ins to the original repo should trigger build events.

Please advise.

I resolved this myself. Looks like repos are always mirrored, even if you select CI/CD only. This is only my impression, I’d love to hear otherwise if that’s the case.

With regards to the check-ins on the original repo not triggering any builds, this was because the GitLab Project was in a non-public GitLab Group.