title: In git log's --name-status listing, what are the numbers suffixed to the status tag?
body: <p>I feel like the answer to this should be simple, but the path I'm taking to search for it doesn't turn it up. Here's a sample output from a git log command (with some options) (names of files have been changed to protect the innocent):</p>
  
  <pre><code>$ git log --pretty=%H --follow --name-status -- plans/some_file
  997efbccfb0c54f95dd3c22498e47d2971caff0d
  
  C070    plans/some_files_previous_name     plans/some_file
  9a265ea5f5b232ec778fb0193ff2f48b3ea25cdf
  
  A       plans/some_files_previous_name
  eadecec4b743cc33e16a4eabf68e35cac62c0fa0
  
  D       plans/some_files_previous_name
  dc408368cf6f80c841f94f58e4c5dc3283929483
  
  M       plans/some_files_previous_name
  8feb7d99b92a993cd8c95506c8d419e4f59d513e
  </code></pre>
  
  <p>What does the 070 after the C mean in the status part of the first entry?</p>