Crossword Genius

Starts fixing a stone in a deceptive action (4,3)

Ross

I believe the answer is:

fast one

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

'a deceptive action' is the definition.
'fast one' can be an answer for 'action' (fast one is a kind of action). I am not sure about the 'a deceptive' bit.

'starts fixing a stone' is the wordplay.
'starts' indicates taking the first letters.
The first letter of 'fixing' is 'f'.
'f'+'a'+'stone'='FAST ONE'

'in' is the link.

Can you help me to learn more?

(Other definitions for fast one that I've seen before include "might be pulled by 20 [HUSTLER] ?" , "Such as Bolt" , "may have been pulled in cheating allegation?" , "Runner" .)

I've seen this clue in the Sydney Morning Herald.
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