$ git clone -n https://src.fedoraproject.org/rpms/blobwars.git /var/lib/mock/f41-build-side-1-2632431-25803/root/chroot_tmpdir/scmroot/blobwars
Cloning into '/var/lib/mock/f41-build-side-1-2632431-25803/root/chroot_tmpdir/scmroot/blobwars'...
$ git fetch origin 703cd18fa732146e7b46dedd062f8c5fa3b79444:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blobwars
 * [new ref]         703cd18fa732146e7b46dedd062f8c5fa3b79444 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 703cd18 convert license to SPDX