To a point...I've had "buds emerging" for weeks on an Amur. Every tree seems to have a different "point of no return", where enough leaf has emerged to take damage. Yours seems it could go either way.
For this reason I'd watch it and learn rather than Repot. Especially if it does have scale. For me, pests is one strike for the year, could be 2 or 3 even. So Repot isn't advised die to that. But also, if this thing halts, and you can wait to Repot a month or so till safer times, you won't get yourself caught in a schedule of repotting too soon, than protecting for no reason.
What is on that one branch?
Sorce