title: Can I create a pull request using the same branch as the base and compare branch?
body: <p>I have a github repo that has master and a branch. We have been developing on branch and then every time we push out a release, we merge the branch's changes into master, then start the next phase of development on branch again. Now, we are asked to use pull request for bug fixes on branch. So the question is, how to do all of the pull request on the branch alone, not involving the master?</p>
  
  <p>More specifically, I have branchA that has a bugfix change, then I commit and push to the branchA repo, then I go to my github repo webpage and try to do a pull request by specifying both the base branch and the compare branch as 'branchA', then github says: <strong>There isn’t anything to compare. You’ll need to use two different branch names to get a valid comparison</strong>. This definitely makes sense, so I am asking if it is possible to somehow compare the <strong>SAME</strong> branch before and after bug fix via a pull request.</p>