Note that it's only a _reference_ to a commit, not the commit object itself. So from a a github point of view, it would not even make sense to scan / trigger on

Note that it's only a _reference_ to a commit, not the commit object itself. So from a a github point of view, it would not even make sense to scan / trigger on this. As long as there are no commit objects with that hash, any reference is harmless.