If i understand right, what u need in that case is a super tall stem, second option is something like a steering tube extension but so far i know u will need another type of stem aswell, a 1 1/8 stem to be more precise. Maybe a 1 inch to 1 1/8 conversion kit will do the trick but no idea whats cheaper, a new fork or a conversion kit.

Thats a picture of the extension im talking about.




For the record never understood why people needs to ride with the handlebar so high, since in that position back pain is the 1st symptom, but well is not my back neither my bike

Good luck