title: How to create a patch without commit in Git?
body: <p>I did some search online. I know that you can use format-patch after commit, but my situation is a little different.</p>
  
  <p>I want to create a patch, similar to "dpk" in SVN, so I can send it out for code review, but I don't yet want to commit it.</p>
  
  <p>How can I achieve this with Git?</p>