Crossword Genius

What meat cleaver might do quickly? (4,4)


I believe the answer is:

chop chop

I'm a little stuck... Click here to teach me more about this clue!

'quickly?' is the definition.
(I know that quickly can be written as chop-chop)

'what meat cleaver might do' is the wordplay.
I cannot really see how this works, but
'meat' could be 'chop' (chop is a kind of meat) and 'chop' is located in the answer.
The remaining letters 'chop' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for chop chop that I've seen before include "repeated punches" , "Repeatedly use machete" , "Quick" , "Fast" , "Promptly!" .)

I've seen this clue in The Times.
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