Red-headed Daddy has a drink (6,3)

I believe the answer is:

ginger pop

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'a drink' is the definition.
(I've seen this before)

'red-headed daddy' is the wordplay.
'red' becomes 'ginger'.
'headed daddy' becomes 'pop' (synonyms. I am not sure about the 'headed' bit.).
'ginger'+'pop'='GINGER POP'

'has' is the link.

Can you help me to learn more?

(Another definition for ginger pop that I've seen is " drink".)

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

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