For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Tobi_Peter:tumbleweed:systemd-boot-snapper/standard/home:Tobi_Peter:tumbleweed:systemd-boot-snapper.repo
zypper refresh
zypper install systemd-journal-remote
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Tobi_Peter:tumbleweed:systemd-boot-snapper/openSUSE_Tumbleweed/home:Tobi_Peter:tumbleweed:systemd-boot-snapper.repo
zypper refresh
zypper install systemd-journal-remote