For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/openSUSE_Factory_zSystems/Archiving.repo
zypper refresh
zypper install libtar
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/openSUSE_Factory_PowerPC/Archiving.repo
zypper refresh
zypper install libtar
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/openSUSE_Factory_ARM/Archiving.repo
zypper refresh
zypper install libtar
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/openSUSE_Factory/Archiving.repo
zypper refresh
zypper install libtar
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/15.6/Archiving.repo
zypper refresh
zypper install libtar
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Archiving/15.5/Archiving.repo
zypper refresh
zypper install libtar