My opinion will probably not be popular, but by making the mirror you are helping with creating this monopoly.
I see the solution in creating small single/few page(s) landing site and linking to the code and releases, being it to self/hosted Gitea, Forgejo, Gitlab, GitHub...
It's not unpopular: I know. I mean, I mentioned the monopoly in my comment for a reason.
But for this niche purpose, GitHub is my (last) social media, and GitHub stars are my bookmarks.
So, yeah, I agree, but your suggestion does little for me to not forget it when I'm looking for something SQLite related, and definitely doesn't help me follow project updates (like a proper GitHub mirror would).
I'm sorry.
Somebody upthread[1] also made a GitHub mirror. I appreciate that different people have different comfort-levels with the centralisation of services like GitHub, but luckily it's really easy for people to copy a Git repo to a host they're more comfortable with, like GitHub or SourceHut or even making a local clone.
I just mirrored it myself to keep tabs on it, because otherwise I'll forget it.
Very interesting approach.