For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:Woodpecker/openSUSE_Tumbleweed/home:ojkastl_buildservice:Woodpecker.repo
zypper refresh
zypper install forgejo
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:Woodpecker/16.0/home:ojkastl_buildservice:Woodpecker.repo
zypper refresh
zypper install forgejo
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:Woodpecker/15.6/home:ojkastl_buildservice:Woodpecker.repo
zypper refresh
zypper install forgejo