title: git branches diverged after rebase
body: <p>I have followed this answer (<a href="https://stackoverflow.com/questions/2100907/how-to-remove-delete-a-large-file-from-commit-history-in-git-repository">How to remove/delete a large file from commit history in Git repository?</a>) to get rid of some big, unwanted files in a repository. I have done all the steps stated there in my local copy (because trying to do it in the bare, original, repository results in an error as long as it does not have a working tree). Nevertheless, when I finish the steps (having removed the files, etc.) and I do a "git status" on my local copy, I get</p>
  
  <pre><code># On branch master
  # Your branch and 'origin/master' have diverged,
  # and have 16 and 18 different commit(s) each, respectively.
  </code></pre>
  
  <p>and I do not know how to send the changes back to the central repository. Can anybody help me?</p>