Lately I've been seeing the "Access to this site has been restricted." error more and more from GH. I do not have any solid repro steps… but it seems to happen most when trying to view a repo from Safari Private Relay in a Private Tab without logging in with my GH credentials.
I have no clear actionable feedback here today. But this might be something to keep an eye on. If there comes a day where GH requires authentication and authorization just to view public issues or diffs on a public repo maybe then there is a discussion about whether or not choosing a different host for the swift repos would be at all practical or worth the tradeoffs of migrating.