title: How to show git log with branch name
body: <p>I try <code>git log</code> w/ <code>--decorate</code> and <code>--source</code> options. But still can not get the branch name of commit  <code>2f3cb60</code> and  <code>d7e7776</code>, Why?</p>
  
  <pre><code>#git log 2f3cb60 --graph  --decorate --source --all --oneline
  ...
  * | | | 1920ad5 refs/heads/gpio support gpio lib
  | |/ /
  |/| |
  * | | 2f3cb60   2f3cb60 fix
  * | | d7e7776   2f3cb60 fix
  | |/
  |/|
  * | aa4dcfb     refs/remotes/origin/httpd support
  * | cfc839d     refs/remotes/origin/httpd add folder
  </code></pre>
  
  <p>How do I show git log with branch name?</p>