title: git error - can't push to github - pack-objects died of signal 9
body: <p>I added some files to the repo, committed, and attempted to push to Github:</p>
  
  <pre><code>$ git add .  
  $ git commit -m 'bla'  
  $ git push origin master
  </code></pre>
  
  <p>I am getting an error when I try to push to Github.  </p>
  
  <pre><code>Counting objects: 84, done.  
  Delta compression using up to 2 threads.  
  error: pack-objects died of signal 9  
  error: failed to push some refs to 'git@github.com:xxxxx/xxxxx.git'
  </code></pre>
  
  <p>All was working fine before I went on vacation 2 weeks ago. Nothing has changed in the interim as far as I know.  The config file seems to be fine.  And git push -f also generates the same errors as above.</p>