It really is too bad we dont have a federated github alternative. I know theres some projects in development, but I can see the emulator scene getting harder and harder to get into if popular repos go down. Decades of work, gone.
There is Radicle which is a peer-to-peer forge.
Edit: Don’t expect all the features of GitHub or Forgejo though.
Also be aware that differences in ground potential can be an issue: https://www.truecable.com/blogs/cable-academy/how-to-fix-a-ground-loop
That is also something you can avoid by going with fibre optics.