Security issues with git : upted required for Git clients

Even though the issue may not affect Linux users, if you are a
hosting service whose users may fetch from your service to Windows
or Mac OS X machines, you are strongly encouraged to update to
protect such users who use existing versions of Git.

source :  

 http://article.gmane.org/gmane.linux.kernel/1853266

 Updated versions on Github are here :

 GitHub for Windows and GitHub for Mac