For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:alarrosa:branches:network:openssh/openSUSE_Tumbleweed/home:alarrosa:branches:network:openssh.repo
zypper refresh
zypper install openssh
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:alarrosa:branches:network:openssh/15.6/home:alarrosa:branches:network:openssh.repo
zypper refresh
zypper install openssh
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:alarrosa:branches:network:openssh/15.5/home:alarrosa:branches:network:openssh.repo
zypper refresh
zypper install openssh