Please upgrade to 2.3 here.
The 2.2 and earlier branches are no longer being updated.
Git, GitHub and Windows users
One of the difficulty of getting started with Git on windows is setting up ssh and a private/public key for authentication. With Git 1.7 however, you can use https for authentication and GitHub now support it:http://github.com/blog/642-smart-http-support
If all the that ssh stuff put you off Git in the past, you should try again.
Try Git Extensions to install Git:
(Git Extension only include Git 1.6.5)