ramosmd

For how GitLab deals with forks, this blog post may offer some insights: https://about.gitlab.com/2016/12/01/how-to-keep-your-fork-up...

This doc may also help: https://docs.gitlab.com/ee/workflow/repository_mirroring.htm...

Would you mind specifying your issues with your custom domain on GitLab Pages? I can try to help you out. :)