kernel-source from home:Ximi1970:Kernel:Stable project
Select Your Operating System
Add repository and install manually
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Ximi1970:Kernel:Stable/15.5/home:Ximi1970:Kernel:Stable.repo zypper refresh zypper install kernel-source