Pass out report in mock attack (5)
I believe the answer is:
feint
'mock attack' is the definition.
(I've seen this in another clue)
'pass out report' is the wordplay.
'pass out' becomes 'faint' (synonyms).
'report' shows a homophone (sound like) (as heard, or reported by someone).
'faint' is a homophone of 'FEINT'.
'in' is the link.
(Other definitions for feint that I've seen before include "Deceptive move by a boxer, for example" , "Misleading action" , "Deceptive motion" , "Deceptive manoeuvre" , "Sell a dummy" .)