You probably want the non-devel project.

This project is empty by intention, it just defines the people who have the right to create Kernel: sub projects.

slowroll branch build for Leap

This repository contains some packages that are used for kernel development and support libraries as needed on different SLE releases.

Since 15.3 Leap is binary compatible with SLE. Please use SLE repositories on Leap.

Notable packages:

kernel-install-tools (develproject) - provides the installkernel binary and some signing tools
patchtools - tools for working with patches in the kernel-source tree
rapidquilt - tool for applying large quilt patch series (as found in kernel-source tree)

Other packages:

qemu, grub2 - patched versions that allow booting kernel signed with KOTD key in secure boot environment