title: Detect IP address of GitHub commit
body: <p>i'm the owner of a few corporate github repositories. Lately we have been suspicious of a developer who may be enlisting outsourced help through his borrowed github identity (many 4am commits in batches). Is there a way on github.com to determine the source IP address of the committer? On the traffic page i can infer this info based on teh number of unique clones, but this is not enough data for us to validate our concerns.</p>
  
  <p>Cheers,
  Joe Anonymous</p>