Pretty sure cloning an human hair follicle successfully has already been achieved, that is the easier part of the equation. The harder part is making it survive after implantation which is just extremely unreliable and expensive to reproduce for the thousands of times that is needed to be commercially available.
Taking huge resources to clone one perfect human follicle is not gonna achieve anything longterm. The bigger problem comes afterwards when you need to deliver 10k healthy grafts for someone and implant them before the follicles die off. Usually in a hair transplant surgery donor grafts are kept in freezing solution for 30minutes max or they have high risk of dying off.
What makes me veeery skeptical of hair cloning ever being useful is the manufacturing process, not the hair cloning itself, I think thats the easy part.