That is redemption.
Redemption requires agency. After a wet night, the child must participate in the solution—but not as punishment. Have a pre-made "redemption kit" next to the bed: waterproof mattress pad, clean pajamas, wipes, a red drawstring bag for wet laundry. Redemption Bedwetting And Consequences
If your child is wetting the bed willfully (which is rare and usually occurs only in cases of oppositional defiant disorder or severe trauma), seek a pediatric psychologist. But for 99% of cases, the child is as horrified as you are. That is redemption