How many times can you GET request to a GitHub Pages (.github.io) site in a particular amount of time before you get ratelimited by GitHub? I couldn't find this online anywhere, strangely.
GitHub Pages usage limitations and rate limiting are documented here. https://docs.github.com/en/pages/getting-started-with-github-pages/about-github-pages#usage-limits
At the time of this answer
GitHub Pages sites have a soft bandwidth limit of 100 GB per month.