the wider my hands are when the bar is overhead the more stable it is.
(also the less height i need on the bar)
the narrower my hands are when the bar is in the rack the more stable it is.
i've also noticed lifters adjust their hand placement. you should be able to 'pop' the last little quarter squat bit of standing up the clean so may as well use that momentum to adjust your hand placement. I think width is limited by stability in the rack? i'm not sure.