$ git clone -n https://src.fedoraproject.org/rpms/gtkmm24.git /var/lib/mock/f31-build-51553-27436/root/chroot_tmpdir/scmroot/gtkmm24
Cloning into '/var/lib/mock/f31-build-51553-27436/root/chroot_tmpdir/scmroot/gtkmm24'...
$ git reset --hard 598edaa26c60bfc1e90fa27a5f86e0963b968b6a
HEAD is now at 598edaa - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild