I wouldn't take the chance with rubber hose and clamps.
Check out this thread:
https://forums.pelicanparts.com/porsche-911-technical-forum/521730-oil-cooler-line-repair-fittings.html
If you remove the oil line (probably the hardest part of the job), use the air pressure method to fix the dent. Then braze the hole.
I think I would try this route. If it doesn't work, replace the line.
Mark