Checking out to FETCH_HEAD for migration-paths-upgrade-ce-to-ee (!7856) · Merge requests · GitLab.org / GitLab

What does this MR do?

Checking out to FETCH_HEAD works better with tags

When the found "branch" is a tag, Git can't checkout to the tag with the remote name as a prefix. See:

So instead, since we're always fetching something, we could just use FETCH_HEAD in this case, and that also works with tags.

Also, we shouldn't run any EE-specific checks for tags:

It didn't fail but we could clearly see that there were errors, and there's no reasons to run it for tags.

(Internal Slack)