He could maybe speed-blitz Kira, provided he doesn't tell him his identity and rewinds time first, he'd definitely beat Jolyne but wouldn't manage to defeat TA4.
To adapt to time reversal Mahoraga needs to witness it, if time is rewinded then he goes back to before he got the chance to start adapting which means he has to start over the adaptation process so he needs to experience multiple time reversals without being effected by it before it can adapt and only then can Sukuna use binding vows to attack beyond time, if it was time stop or skip it would work but rewind doesn’t work here.