One possible scenario: GitHub may have been young, foolish, and naive, and originally registered their domain with GoDaddy.
Then they woke up and realized what a STEAMING PILE GoDaddy is as a company, and corrected the error of their ways for their other domains. :)
Just my random $.02 :)
Re:HitGub.com
by alexjeffrey on Monday April 01, 2013 @06:57PM
(#5476476)
Fair point; I assumed it was given it redirects to github.com.
github.com shows that it's registered through GoDaddy. hitgub.com is registered via namecheap, and has its contacts hidden.