For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:abrooks/openSUSE_Tumbleweed/home:abrooks.repo
zypper refresh
zypper install cockpit-snapshots
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:abrooks/openSUSE_Factory_ARM/home:abrooks.repo
zypper refresh
zypper install cockpit-snapshots
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:abrooks/15.6/home:abrooks.repo
zypper refresh
zypper install cockpit-snapshots