What are some of the GitHub alternatives that you consider for Bitcoin Core and other Bitcoin related projects? Time for Bitcoin Core and other bitcoin related projects to look for GitHub alternatives?
Some of the issues:
https://techcrunch.com/2019/07/29/github-ban-sanctioned-countries/
https://twitter.com/lrvick/status/1320246266270519297
https://twitter.com/jonatack/status/1315623229747322880
A list of some GitHub alternatives is here.

GitLab
BitBucket
SourceForge
Launchpad
Google Cloud Source Repositories
AWS CodeCommit
Phabricator
Gogs (Self-Hosted)
Gitea (Self-Hosted)
Apache Allura (Self-Hosted)

This GitHub Repo Full Downloader written by Andrew Chow may also be of interest.
Discussion on whether to move from GitHub and where to move to should be had on IRC and GitHub rather than here. StackExchange isn't set up for discussions and conversations and it will get very noisy if everyone expresses a view here.