$ git clone -n https://src.fedoraproject.org/rpms/udpcast.git /var/lib/mock/f41-build-side-1-2671072-29079/root/chroot_tmpdir/scmroot/udpcast
Cloning into '/var/lib/mock/f41-build-side-1-2671072-29079/root/chroot_tmpdir/scmroot/udpcast'...
$ git fetch origin 389a9ff0674536a2c43ccbec50313737e4e94ccb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/udpcast
 * [new ref]         389a9ff0674536a2c43ccbec50313737e4e94ccb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 389a9ff convert license to SPDX