I recently purchased a second-hand leather jacket, and the lining has significant holes in it where the pockets are. This is because the pockets extend about 2cm further down then the lining would allow.

Naturally I would want to fix these holes and stop the fraying, but I'm not sure how I could go about this. I don't have any suitable material to patch it, and wouldn't want to cause further damage. Having a patch that dangles below the hem to accommodate the pocket is undesirable, but losing pocket space instead would be a bummer. I'm also uncertain how well I could attach a different material to the existing lining, especially with my limited skills.

It should be noted that there is still some material attached to the leather along the hem of the jacket, which could be used to attach a patch.

Any recommendations would be appreciated, as I've never had to do anything like this before.