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Gitlab, IMHO, is the gold-standard for self-hosted Git data, CI/CD, Issue-tracking, etc (IMHO, at least). You can use their (US-based, IIRC) hosted solution, or download their Omnibus package and get a self-hosted instance running in less than an afternoon.

If your policy is not to use products of companies operated in the US (and thus bound by US laws)...you're going to have to give up a lot more than just GitHub.

I'm not a huge fan of these sanctions. Though I do think Microsoft is following the law in a fairly standard fashion.

Gitea is a lovely open source Github-esque git server.