title: How to reapply changes from a previously completed pull request?
body: <p>Recently sent in a PR that was reviewed and accepted, which resulted in an unforeseen bug. My lead dev reverted the master branch back to what it was before the pr. I got to work fixing the errors, however he did not revert the PR, he just reverted the repo. So when I went to make a new pr with all the changes from my feature branch, the new PR only contained the changes I made since the first PR, i.e. none of the original changes. How can I get <em>all</em> of the changes from my feature branch into the master, i.e. the cumulative changes of both PR's.</p>