title: Undo "roll back to this commit"
body: <p>I am new to git and github and I have some trouble.</p>
  
  <p>I am using <a href="https://github.com/blog/1127-github-for-windows">github for windows</a> to manage a small project I have. I think I've lost some changes I recently did to my code. What I did was:</p>
  
  <ol>
  <li>Changed some files.</li>
  <li>Accidentally committed the changes.</li>
  <li>Reverted the commit.</li>
  <li>Then I pressed "roll back to this commit".</li>
  </ol>
  
  <p>Now all changes are gone, including some new files I added. Can I save them? I have also installed git (command line) so I can execute any command you think will help.</p>