$ git clone -n https://src.fedoraproject.org/rpms/plasma-pa.git /var/lib/mock/f42-build-side-1-3584933-46899/root/chroot_tmpdir/scmroot/plasma-pa
Cloning into '/var/lib/mock/f42-build-side-1-3584933-46899/root/chroot_tmpdir/scmroot/plasma-pa'...
$ git fetch origin ca0bd0f420424a8f117c7bf18296c68da964f7fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-pa
 * [new ref]         ca0bd0f420424a8f117c7bf18296c68da964f7fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca0bd0f 6.4.2