$ git clone -n https://src.fedoraproject.org/rpms/plasma-discover.git /var/lib/mock/f40-build-2552053-61953/root/chroot_tmpdir/scmroot/plasma-discover
Cloning into '/var/lib/mock/f40-build-2552053-61953/root/chroot_tmpdir/scmroot/plasma-discover'...
$ git fetch origin 03a43a55b083d60089b96675f6c1492b58a11da6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-discover
 * [new ref]         03a43a55b083d60089b96675f6c1492b58a11da6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03a43a5 6.0.2