$ git clone -n https://src.fedoraproject.org/rpms/kf6-kitemviews.git /var/lib/mock/f42-build-side-1-3570257-46748/root/chroot_tmpdir/scmroot/kf6-kitemviews
Cloning into '/var/lib/mock/f42-build-side-1-3570257-46748/root/chroot_tmpdir/scmroot/kf6-kitemviews'...
$ git fetch origin ffccb2605b49c39594be6db58c603cd590608fd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kitemviews
 * [new ref]         ffccb2605b49c39594be6db58c603cd590608fd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffccb26 6.15 and plasma 3.4 compatibility rebuild