Sébastien Wilmet commented:
Or instead of migrating them to my personal GitHub account, it can be moved to my personal account on this GitLab instance, that way I suppose that it's easy to keep the issues and merge requests.
I just want to be the only person who can push commits to the git repo.
Amtk is used by Devhelp, so it's maybe a better idea to keep Amtk where it is. But the other two projects are not used by any other gnome module normally.