title: Is two way sync between gerrit and github.com possible?
body: <p>For a project exisitng in github.com private repository, I am setting up gerrit code review. </p>
  
  <p>I am using the gerrit's replication plugin to keep the gerrit repository in sync with github.com. </p>
  
  <p>But if someone commits (say <code>commit-a</code>) and pushes directly to github.com,  the <code>commit-a</code> is overwritten in github.com, when gerrit does the replication process (because, it replicates only the things in gerrit mirror).</p>
  
  <p>But I want to implement a 2-way sync. Something like, whenever a push is made to gerrit, it has to check github.com and update its mirror with new code from there and then to continue the merge.</p>
  
  <p>Is that possible?  </p>