title: No changes are pushed when using hg-git
body: <p>I'm trying to get the hg-git extension working under Windows and after hours of fiddling, I finally seem to have it working. However, nothing shows up in my git repository even though the output of hg push reads:</p>
  
  <pre><code>importing Hg objects into Git
  creating and sending data
      github::refs/heads/master =&gt; GIT:8d946209
  [command completed successfully Wed Oct 20 15:26:47 2010]
  </code></pre>