title: Automatically mirror a git repository
body: <p>One of the side-effects of using an external Subversion repository was getting automatic offsite backups on every commit.</p>
  
  <p>I'd like to achieve the same using Git. </p>
  
  <p>i.e. every commit to my local repository automatically commits to an external one so the two repositories are always in sync.</p>
  
  <p>I imagine that a post-commit hook would be the way to go. Does anyone have any specific examples of this?</p>