First beastly reprobates in clodhoppers (7)
I believe the answer is:
brogues
'clodhoppers' is the definition.
('brogue' can be a synonym of 'clodhopper')
'first beastly reprobates' is the wordplay.
'first beastly' becomes 'b' (1st letter of 'beastly').
'reprobates' becomes 'rogues' (I've seen this in another clue).
'b'+'rogues'='BROGUES'
'in' is the link.
(Other definitions for brogues that I've seen before include "Oxford and Derby, for example" , "Lace-up shoes" .)