For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:crameleon/openSUSE_Tumbleweed/home:crameleon.repo
zypper refresh
zypper install systemd-rpm-macros
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:crameleon/openSUSE_Factory_ARM/home:crameleon.repo
zypper refresh
zypper install systemd-rpm-macros
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:crameleon/16.0/home:crameleon.repo
zypper refresh
zypper install systemd-rpm-macros