zypper from zypp:Head project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/zypp:Head/openSUSE_Tumbleweed/zypp:Head.repo zypper refresh zypper install zypper
For openSUSE Factory Staging I run the following as root:
zypper addrepo https://download.opensuse.org/repositories/zypp:Head/openSUSE_Factory_Staging_I/zypp:Head.repo zypper refresh zypper install zypper