title: git: how to merge a pull request into a fork?
body: <p>My situation is as follows:
  - I have a fork of an opensource github project.
  - I do all of my development in my forked repo in branches from the develop branch
  - There is an unmerged pull request I need in the main repo's develop branch
  - To test the unmerged pull request I created a new directory and cloned origin to it then fetched the unmerged request to the main
  - Now that I've tested the unmerged pull request, i need to merge the pull request with my fork of develop.</p>
  
  <p>What steps will allow me to merge the pull request into my local fork?</p>