To be honest, that's precisely what had been on my mind.
Did you know Vinge is himself a computer scientist? IIRC, there's a point in A Deepness In The Sky where its implied that the protagonists' interstellar ramscoop ships run a descendant of Unix.
Yeah, I did read that about Vinge somewhere. And I loved that little callout to the unix epoch.
And you know, Git would be the perfect source control system for an interstellar species who various settled systems are separated from each other by light years.