How to fix a vertical rip in corduroy pants?

So, I seem (no pun intended) to have a penchant for getting vertical rips/tears in my corduroy pants, usually to the left of the zipper fly in the front of the pants. I don't want to throw them away, because the rip is the ONLY thing wrong with the pants. I don't know HOW to mend the rip without the repair drawing attention. Does anyone know how to mend corduroy, specifically?
Steph, March 2019