title: How can I 'unfork' in GitHub Desktop?
body: <p>I have forked a public Github repo using the Mac GitHub Desktop client, so I can make some changes and submit them.</p>
  <p>I have got my fork into a total mess (I am not used to working with forks) and want to start over, but I cannot find a way to tell the client my repo should track the original repo rather than my fork... it seems irrevocably bound to my fork.</p>
  <p>How can I get the client app to forget I <em>have</em> a fork?</p>