tmux from home:ojkastl_buildservice:tmux project
Select Your Operating System
Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ojkastl_buildservice:tmux/15.4/home:ojkastl_buildservice:tmux.repo zypper refresh zypper install tmux