Indian saint has turned European from top to bottom (5)

I believe the answer is:

rishi

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'indian saint' is the definition.
'rishi' can be an answer for 'saint' (thesaurus). I am not sure about the 'indian' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for rishi that I've seen before include "wise man" , "Hindu sage or saint" , "Revered man" , "Guru" , "Spiritual leader" .)

I've seen this clue in The Hindu.

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