[0xmohit]

You could try github-backup [0]. Quoting from the description:

  It backs up everything GitHub publishes about the repository,
  including branches, tags, other forks, issues, comments, wikis,
  milestones, pull requests, watchers, and stars.

And did I mention that it's written in Haskell!

[0] https://github.com/joeyh/github-backup

[davidgerard]

Sounds good :-) Are you actually using it? What's your experience using it to try to back up an organisation account?

edit: "github-backup does not log into GitHub, so it cannot backup private repositories." So, looks like that won't do it for us, sorry :-(