Crossword Genius

Going back here to renew faith? (2,7)

Ross

I believe the answer is:

in retreat

I'm a little stuck... Click here to teach me more about this clue!

'back here to renew faith?' is the definition.
I know nothing about this answer so I can't judge whether this works.

'going' is the wordplay.
I cannot really understand how this works, but
'going' could be 'retreat' (retreat is a kind of going) and 'retreat' is found within the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Independent.
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