Comment # 11 on bug 1189596 from Takashi Iwai

The "unofficial" kernel packages that are freshly built from the latest git
branch is found in OBS Kernel:* projects, e.g. for Leap 15.3, it's OBS
Kernel:SLE15-SP3.  Leap 15.2 has its own branch, so it's in OBS
Kernel:openSUSE-15.2, and TW is OBS Kernel:stable repo.  Kernel:HEAD contains
the built from the latest Linus tree (starting after rc1 release).
You can find some more information in https://kernel.suse.com/

Note that the above are unofficial builds, hence they won't boot with Secure
Boot.