Pinches acts yet alternates (5,5)

I believe the answer is:

takes turns

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'alternates' is the definition.
('take turns' can be a synonym of 'alternate')

'pinches acts' is the wordplay.
'pinches' becomes 'takes' (I can't justify this - if you can you should believe this answer much more).
'acts' becomes 'turns' (turn is a kind of act).
'takes'+'turns'='TAKES TURNS'

'yet' is the link.

Can you help me to learn more?

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

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