Go to patch up (6)
I believe the answer is:
repair
This clue is a double definition.
'go' is the first definition.
(I've seen this before)
'patch up' is the second definition.
(thesaurus)
'to' is the link.
(Other definitions for repair that I've seen before include "Make one's way (to); fix" , "do some darning" , "Restore to working condition" , "service" , "resort" .)