$ git clone -n https://src.fedoraproject.org/rpms/crosswords.git /var/lib/mock/f41-build-3150692-40566/root/chroot_tmpdir/scmroot/crosswords
Cloning into '/var/lib/mock/f41-build-3150692-40566/root/chroot_tmpdir/scmroot/crosswords'...
$ git fetch origin 8b64e0ddbe8c0253e0b90fa00e97ad2e232c391d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crosswords
 * [new ref]         8b64e0ddbe8c0253e0b90fa00e97ad2e232c391d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b64e0d Fix gresource generation