[gime_tree_fiddy]

Is it possible for GitHub to mirror the releases in multiple different places(they likely do that, but I mean complete isolation where an outage like this doesn't break the downloads). Maybe like a proxy to object store, so it is a little more reliable(a setup such as this, should have less moving and custom parts).

So in a moment like this, you can convert https://github.com/opencv/opencv/archive/4.5.3.zip to https://archive.github.com/opencv/opencv/archive/4.5.3.zip. Maybe an implicit agreement of somewhat stale data by add the sub-domain "archive.". They'll try to maintain low sync times on a "best effort basis".)

[amelius]

Anybody could do that, I suppose. (I mean for the public repos).