title: For how long can you restore/recover a deleted branch on GitHub?
body: <p>This is not a question on <em>how</em> to restore lost branches in Github, but rather how long you have to restore a deleted branch through the following user case story:</p>
  
  <p>Within a pull request (often used as a place for code review) the branch can be merged and then deleted, all in the github GUI.  Should you choose to delete it, you are given the option with a bold and underlined word, to "restore" the branch.  </p>
  
  <p>I suspect this option has a time limit and that github doesn't keep this available indefinitely.</p>
  
  <p><strong>Does github have a time limit on how long you can do this?  If it does, what is that time limit?</strong></p>