title: git push to multiple repositories simultaneously
body: <p>How can I make <code>git push</code> to push not only to <code>origin</code> but also another remote repository?</p>
  
  <p>as <code>git push</code> is only an alias for <code>git push origin</code>, can I alias git push to push to 2 remote repositories at once (with just that one command)?</p>
  
  <p>I’m not looking for a non-git script here but would like to set this up for my local repository in git.</p>
  
  <p>When I tried it with post-push scripts I failed.</p>