"Roger that" (4)
'roger that' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for copy that I've seen before include "material for article?" , "Ape; replica" , "stuff to be published" , "Borrow" , "The editor wants this" .)
(Other definitions for gotcha that I've seen before include "You've been caught" , "You're caught - I understand you" , "I have found you" , "claim to have made conquest?" , "I've trapped you!" .)