$ git clone -n https://src.fedoraproject.org/rpms/libmng.git /var/lib/mock/f31-build-59012-28525/root/chroot_tmpdir/scmroot/libmng
Cloning into '/var/lib/mock/f31-build-59012-28525/root/chroot_tmpdir/scmroot/libmng'...
$ git reset --hard af2abb03799d2ab22ca8c82e1978356f654615c9
HEAD is now at af2abb0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild