$ git clone -n https://src.fedoraproject.org/rpms/libgsystem.git /var/lib/mock/f31-build-58728-28492/root/chroot_tmpdir/scmroot/libgsystem
Cloning into '/var/lib/mock/f31-build-58728-28492/root/chroot_tmpdir/scmroot/libgsystem'...
$ git reset --hard 8b69c8e6fbac94f0bb40f6bae376da4e9653c967
HEAD is now at 8b69c8e - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild