Same old, same old (3)

I think it could be either:

Which length description are you looking for?:

7 3*

'same old same old' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for rut that I've seen before include "Grove you should not remain in" , "Oestrus" , "spell of arousal" , "Settled routine" , "Deep track or bad habit" .)

I've seen this clue in the Universal and The New York Times.

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