From their FAQ:

What does Gogland mean? This is a codename and not the final product name. Our inspiration was the name of an island in the Gulf of Finland, not very far from Kotlin.

Or more strangely "Gog Land"

My first thought was about the Karma testing framework originally being named "Testacular", and people making jokes about balls.

I think they were binging some Croneneberg

Yeah. At the command line, now:

idea .

mine .

gland .