Fellow with empty pockets swapping sides (5)

I believe the answer is:

bloke

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'fellow' is the definition.
(I know that fellow can be written as bloke)

I don't understand the remainder of the clue.

(Other definitions for bloke that I've seen before include "Chap, man" , "Geezer" , "Chap, lad" , "Fellow (informal)" , "Man (colloq.)" .)

I've seen this clue in The Guardian.

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