gettext-runtime from home:mrbadguy:gimp-unstable 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/home:mrbadguy:gimp-unstable/openSUSE_Tumbleweed/home:mrbadguy:gimp-unstable.repo zypper refresh zypper install gettext-runtime