The most common and most likely answer to this crossword clue is the 6 letter word TINKLE
I've seen this crossword clue in Independent
T
I
N
K
L
E
More clues leading to the result TINKLE
Buddy explains!

The straight part
We know that "Go" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case go = tinkle.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TINKLE mean?
TINKLE noun- A light metallic sound, resembling the tinkling of bells or wind chimes.
- A telephone call.
- An act of urination.
- To make light metallic sounds, rather like a very small bell.
- To cause to tinkle.
- To indicate, signal, etc. by tinkling.
- To hear, or resound with, a small, sharp sound.
- To urinate.