title: How can I show what a commit did?
body: <p>A stupid way I know is:</p>
  <pre><code>git diff commit-number1 commit-number2
  </code></pre>
  <p>Is there a better way?</p>
  <p>I mean, I want to know the commit1 itself. I don't want to add the commit2 before it as a parameter.</p>