$ git clone -n https://src.fedoraproject.org/rpms/plasma-workspace.git /var/lib/mock/f40-build-2255809-54266/root/chroot_tmpdir/scmroot/plasma-workspace
Cloning into '/var/lib/mock/f40-build-2255809-54266/root/chroot_tmpdir/scmroot/plasma-workspace'...
$ git fetch origin 9826756f83762302c0fc5228cc9bb2a2d93ba36b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-workspace
 * [new ref]         9826756f83762302c0fc5228cc9bb2a2d93ba36b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9826756 Rebuild for plasma-breeze