Go to mend (6)
I believe the answer is:
repair
This clue is a double definition.
'go' is the first definition.
(I've seen this before)
'to mend' is the second definition.
(synonyms)
(Other definitions for repair that I've seen before include "Fix, mend" , "resort" , "do some darning" , "Mend, restore to good condition" , "Mend, put right" .)