title: Github creating new branch
body: <p>For an interview I was asked to refactor an existing project. From the github repository I was given, I was told to: 
  Create a new branch, make updates, commit changes, push to new branch. 
  Then I was told to create a PR with master as the base branch and change the base branch to the forked [company] repository's master branch. </p>
  
  <p>Since I've only worked on my own projects before, I have no idea what to do here. I've been googling and trying to figure it out on my own but can't figure it out.</p>