title: How can I compare two versions of software, one of which is in a GIT repo?
body: <p>I using a vendor modified version Linux which is based on a 2.6.14.* (more specifically than that, I don't know which) version of the kernel. </p>
  
  <p>I'd like to forward port the vendor kernel changes, but first it makes sense to me to see what changes were made.  I've cloned the linux git repo:</p>
  
  <pre><code>$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git linux-git
  </code></pre>
  
  <p>and would now like to do a diff, and perhaps create a branch with the vendor code.  Suggestions?</p>