[mschuster91]

Is this something like the Bitcoin vanity addresses? Partial sha1 collision?

[bri3d]

Yes. You can alter the content of the commit freely, so it's pretty easy to just fuzz the data until you get a commit you like.

This was the premise of Stripe CTF V3's second challenge ("Level 1: Mine me a Gitcoin") this year.

[Rygu]

Yes, it's just as funny as cafebabe... http://en.wikipedia.org/wiki/Hexspeak