grub2-x86_64-efi from home:mslacken:secboot project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mslacken:secboot/openSUSE_Tumbleweed/home:mslacken:secboot.repo zypper refresh zypper install grub2-x86_64-efi