Wretched gang gets drunk, taking lorry off (5,3)

I believe the answer is:

sorry lot

'wretched gang' is the definition.
(a wretched or sorry group of people)

'drunk taking lorry off' is the wordplay.
'drunk' becomes 'sot' (both can mean someone who drinks too much).
'taking' means one lot of letters goes inside another.
'off' indicates anagramming the letters.
'lorry' anagrammed gives 'rrylo'.
'sot' placed around 'rrylo' is 'SORRY LOT'.

'gets' acts as a link.

I've seen this clue in The Guardian.

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