For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:cahu:security:SELinux:fixleapbuild/openSUSE_Factory/home:cahu:security:SELinux:fixleapbuild.repo
zypper refresh
zypper install selinux-autorelabel
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:cahu:security:SELinux:fixleapbuild/15.5/home:cahu:security:SELinux:fixleapbuild.repo
zypper refresh
zypper install selinux-autorelabel
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:cahu:security:SELinux:fixleapbuild/15.4/home:cahu:security:SELinux:fixleapbuild.repo
zypper refresh
zypper install selinux-autorelabel