$ git clone -n https://src.fedoraproject.org/rpms/plasma-activities.git /var/lib/mock/f40-build-800516-143605/root/chroot_tmpdir/scmroot/plasma-activities
Cloning into '/var/lib/mock/f40-build-800516-143605/root/chroot_tmpdir/scmroot/plasma-activities'...
$ git fetch origin 207e45d968f3f1ccf1415a4afc18304a39ebbb7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-activities
 * [new ref]         207e45d968f3f1ccf1415a4afc18304a39ebbb7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 207e45d 6.0.3