Time to leave religious headgear for Pope (5)
I believe the answer is:
urban
'pope' is the definition.
(there have been several Pope Urbans)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for urban that I've seen before include "Of or about city areas" , "Relating to built-up areas" , "Relating to towns" , "Relating to a city/town" , "Of towns or cities" .)