I tried to make a pull request already, haha. error forking repo: HTTP 403: The repository exists, but it contains no Git content. Empty repositories cannot be

I tried to make a pull request already, haha. error forking repo: HTTP 403: The repository exists, but it contains no Git content. Empty repositories cannot be forked. (https://api.github.com/repos/twitter/the-algorithm/forks https://api.github.com/repos/twitter/the-algorithm/forks)