github-backup is a simple tool you run in a git repository you cloned from GitHub. It backs up everything
GitHub publishes about the repository, including other branches, tags, forks, issues, comments, wikis,
milestones, pull requests, and watchers.
Alternately, if you pass it the username of a GitHub user, it will check out, and back up, all that
user's repositories, as well as all the repositories that user is watching. (Also works to pass the name
of an organization using GitHub.)
By default it runs without logging in to GitHub. To log in, set GITHUB_OAUTH_TOKEN to an oath or personal
access token. However note that logging in only works around API rate limiting; it does not allow
private repositories to be downloaded.