Looks like the GitHub API: https://docs.github.com/en/free-pro-team@latest/rest/commits...

I'm looking forward to your jq version. I love jq and use it all the time, but for anything of that complexity, I'd probably just use Python.

If the task was the produce an object with the top 10 commiters with username as key and value number of commits maybe something liket this:

    group_by(.commit.author.name) | map({key: first.commit.author.name, value: length}) | sort_by(.value) | reverse[:10] | from_entries