I was trying to install the CLI (with nmp ci, so I'm not 100% sure if it was the cli package or some other supabase package) and repeatedly got a download error for https://github.com/supabase/cli/releases/download/v2.45.5/supabase_linux_amd64.tar.gz . Checking it with curl I found that the github server responded with a 504 gateway timeout error and further investigating I found that I can download that file if I'm authenticated with github but can't if I'm not).
Github has a rate limit for unauthenticated requests, which I suspect is counted against the project. As far as I could see, you can ask for it being increased. (I've never seen this issue so far, so I assume other popular open source projects were given an excepmtion/higher limit.)