$ git clone -n https://src.fedoraproject.org/rpms/libvdpau.git /var/lib/mock/f40-build-2242248-53669/root/chroot_tmpdir/scmroot/libvdpau
Cloning into '/var/lib/mock/f40-build-2242248-53669/root/chroot_tmpdir/scmroot/libvdpau'...
$ git fetch origin 41081fc7cc52de1a2c58f8802cc49210eba31d51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libvdpau
 * [new ref]         41081fc7cc52de1a2c58f8802cc49210eba31d51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41081fc SPDX migration: license is already SPDX compatible