title: Rollback using repo command?
body: <p>How can I do a rollback when I use the <a href="http://source.android.com/source/using-repo.html" rel="noreferrer">repo command</a>?</p>
  
  <p>I made some changes in some files and now I want to rollback to the source that was downloaded when I used the <code>repo sync</code> command.</p>
  
  <p>I haven't committed the changes.</p>