Hard border control: that's prickly! (8)

I believe the answer is:

hedgehog

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'that's prickly' is the definition.
(I know that hedgehog is prickly)

'hard border control' is the wordplay.
'hard border' becomes 'hedge'.
'control' becomes 'hog' (I can't justify this - if you can you should give a lot more credence to this answer).
'hedge'+'hog'='HEDGEHOG'

Can you help me to learn more?

(Other definitions for hedgehog that I've seen before include "Spiny insect-eater" , "Woodland animal" , "Prickly beast" , "Urchin" , "Nocturnal mammal" .)

I've seen this clue in The Sun.

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