For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:wkazubski:G03/openSUSE_Tumbleweed/home:wkazubski:G03.repo
zypper refresh
zypper install xorg-x11-server
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:wkazubski:G03/15.6/home:wkazubski:G03.repo
zypper refresh
zypper install xorg-x11-server
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:wkazubski:G03/15.5/home:wkazubski:G03.repo
zypper refresh
zypper install xorg-x11-server