What's the ?ref=hn in the URL about? I'm intrigued if there's some way to track this sort of thing at GitHub. Or was it just to get around its two previous posts? ;-) (Not that I can blame you for that, gotta keep trying.)
I might be wrong but I don't think you can access your Github repo's analytics. The only reason I can think off other than the one you mentioned is that if the link gets reposted to forums/blogs, he knows the source of it as HN.
