Here, there's a Green (6)

I believe the answer is:

hither

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'here' is the definition.
(I know that here can be written as hither)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for hither that I've seen before include "Hit her, being towards this place" , "Here (arch)" , "In this direction" , "so far" , "Towards this place - not yonder" .)

I've seen this clue in the Evening Standard.

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