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In vacs, hire supply one can get for revision -- me? (8,7)

Ross

I believe the answer is:

personal pronoun

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

'me?' is the definition.
(I've seen this in another clue)

'in vacs hire supply one can get for revision' is the wordplay.
I cannot really see how this works, but
'one' could be 'un' (northern English dialect form of 'one') and 'un' is located in the answer.
'for' could be 'pro' (as in being 'pro' something) and 'pro' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for personal pronoun that I've seen before include "We, say" , "Maybe we" , "us, perhaps" .)

I've seen this clue in The Telegraph.
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