GitPython `Repo.clone_from` fails if missing authentication

[j6k4m8]

Thanks @wrongu for helping me track this down! The service will just hang, waiting for interactive authentication. Not sure how to disable this and fail fast in a non-TTY.

[wrongu]

Useful? https://github.com/overleaf/overleaf/tree/main/services/git-bridge#creating-oauth-app

(Maybe not given we know there will be rate limiting issues?)

[j6k4m8]

I don't know what the actual rate limit is, but resulting number of requests that a particular user gets to benefit from will scale with $O(\frac{1}{|users|})$ which is definitely no good, no matter what $|users|$ actually is. I think ultimately git backend overleafs are a nonstarter for teams larger than perhaps one K-lab. But a REALLY useful testbed for fast iteration! :)