Ask Google, this project predates the LLM.
Fun fact: one of the first 10 bugs filed on the Go programming language was "Hey, I've been working on a programming language named Go for the last 10 years, please pick another name." https://github.com/golang/go/issues/9
Back when I was a Googler, I used to play a little game where I would think of a random word and then check if there was a Google internal project code named for it. It was a bit hard finding stuff that wasn't some system or project, and often there would be multiple ones. I actually found one that I thought would be a nice name and reserved the go link for it, but naming anything after it never panned out, when I finally got to design a system from scratch my manager wanted a boring descriptive name like "consolidated data system" (it was a bit more specific but that was the vibe).
Side note: I noticed that more "boring" and less sexy projects had cooler names a lot of the time, and my theory was that people were compensating for doing unsexy work.