I hope this doesn't become a trend. Moving it to go means you need to compile it before you run it, or blindly run an uninspected binary from some random guy
It's not like the performance of this could have motivated it
I mean, you shouldn't blindly run a shell script anymore than a binary anyways. And if you're reading the code I'd rather read Go than bash any day. That said, yes there is an extra compilation step.
I'll take the minimal hassle of having to compile a go program over a complex shell script that only the author understands (if that) any day.
Performance isn't everything; readability and maintainability matter too.