title: Interactive rebase for only my commits
body: <p>While working on my branch i merged the master branch to keep my work up to date with the master.</p>
  
  <p>Now when I want to clean up my commit history (squash / pick) i get all the commits from the master branch as well by <code>git rebase myBranch -i HEAD myfirstcommit</code></p>
  
  <p>How can I filter out the commits from the master branch, so I can only rearrange my own commits?</p>