To provide a secure and dependable experience on GitHub, we’re rolling out updates to rate limits for requests made without authentication. These changes will apply to operations like cloning repositories…
That's low enough that it may cause problems for a lot of infrastructure. Like, I'm pretty sure that the MELPA emacs package repository builds out of git, and a lot of that is on github.
I see the "just create an account" and "just login" crowd have joined the discussion. Some people will defend a monopolist no matter what. If github introduced ID checks à la Google or required a Microsoft account to login, they'd just shrug and go "create a Microsoft account then, stop bitching". They don't realise they are being boiled and don't care. Consoomer behaviour.
I honestly don't really see the problem here. This seems to mostly be targeting scrapers.
For unauthenticated users you are limited to public data only and 60 requests per hour, or 30k if you're using Git LFS. And for authenticated users it's 60k/hr.
What could you possibly be doing besides scraping that would hit those limits?