“Go for X” was somewhat common, including in media. I think OP was mishearing that. There’s virtually no way to differentiate between “gopher” and a rushed, casual “go for” in speech.

Me too and me neither. I’m over sixty, I’ve lived in various parts of the country, and I’ve never head anyone say that.

I want to know what that’s about too!

I’ve only ever used this on a movie set radio. It’s real but limited in its uses.