$ git clone -n https://src.fedoraproject.org/rpms/libmp4v2.git /var/lib/mock/f33-build-292786-54979/root/chroot_tmpdir/scmroot/libmp4v2
Cloning into '/var/lib/mock/f33-build-292786-54979/root/chroot_tmpdir/scmroot/libmp4v2'...
$ git reset --hard 6a501abadcff730034efaa4264bea3a6959e5f99
HEAD is now at 6a501ab - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild