title: Determine if a fork is ready
body: <p>From the documentation at <a href="https://developer.github.com/v3/repos/forks/" rel="nofollow">https://developer.github.com/v3/repos/forks/</a></p>
  
  <pre><code>Forking a Repository happens asynchronously. Therefore, you may have to 
  wait a short period before accessing the git objects. If this takes longer than 
  5 minutes, be sure to contact Support.
  </code></pre>
  
  <p>Is there a way to check if the fork is completed?</p>
  
  <p>I thought about accessing individual files in the forked repo, but I don't have a large enough repo (that actually takes a long time to fork) to test this on.</p>