Do something unoriginal in the garden shed (5)
I believe the answer is:
repot
'do' is the definition.
Although both the answer and definition are verbs in their base form, I don't see how one could define the other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for repot that I've seen before include "plant in another location" , "place somewhere new to put down roots" , "transfer seedlings" , "Transplant" , "to fit into new container" .)