Yes, pour-over wills go through probate in Georgia.
A pour-over will gets treated like a normal will.
Wills have to go through probate.
Any property that is not in the trust has to go through probate when you die.
The pour-over will designates that trust as the beneficiary of the estate.
This way, your remaining assets do not get distributed per intestate laws in Georgia.
They get placed in the trust after probate so the assets can get controlled by the trustee.
Related: Do Wills Have To Be Probated In Georgia