Hastily leave a house that's just a disorderly tip (3,2)

I believe the answer is:

hop it

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'hastily leave' is the definition.
'hop it' can be an answer for 'leave' (to hop it is to leave quickly). I am not sure about the 'hastily' bit.

'a house that's just a disorderly tip' is the wordplay.
'a house' becomes 'h'.
'that's just' becomes 'o' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a disorderly' is an anagram indicator.
'tip' anagrammed gives 'pit'.
'h'+'o'+'pit'='HOP IT'

Can you help me to learn more?

(Other definitions for hop it that I've seen before include "Scarper, be gone" , "On your bike!" , "get lost" , "Leave" , "Clear off!" .)

I've seen this clue in the Evening Standard.

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