Short Answer: Yes, a V, Y or Z-shaped scar.
This is what the scarring looks like (UK and EU clinic photos 2011-2018).
UK Penis Lengthening Surgery in 2016.  BBC Television
Germany – Penile Lengthening 2016
Germany – Penile Lengthening 2016
Explanation:
If you are in a long-term relationship, and your partner knows about your penis lengthening surgery, then scarring may not cause you any embarrassment.
If you are a young man and expect to have numerous sexual partners during your lifetime, then ask yourself whether you will feel comfortable explaining away the scars under your pubic hair; in the shape of the letters V, Y, Z.
A scar will need to be made to cut the ligaments. It won’t be fully hidden by your pubic hair.