title: Heroku push master ssh problem
body: <p>I get this when I am trying to push to my Heroku app:</p>
  
  <pre><code>ssh_exchange_identification: read: Connection reset by peer
  fatal: The remote end hung up unexpectedly
  </code></pre>
  
  <p>I tried regenerating the ssh keys and adding them to the remote, but no joy.  Any help.
  Kinda stuck in a rut here!</p>
  
  <p>EDIT: and now I get the same error from a different app that was working very recently. :/</p>