title: Send a pull request on GitHub for only latest commit
body: <p>I forked a project on github and am successfully making changes to my local master and pushing to origin on github. I want to send a pull request, but only want to include the last commit.  The pull request UI on github.com shows the last 9 commits and I don't know how to filter that down.</p>
  
  <p>I was trying to understand if I should create a new local branch, check that out and somehow reset or rebase to upstream?  Then apply my last commit from my master by id to the new local branch and use that for the pull request?</p>
  
  <p>I'm trying to get the concepts right and figure out the right command lines to do what I need.</p>