$ git clone -n https://src.fedoraproject.org/rpms/plasma-desktop.git /var/lib/mock/f41-build-860695-169152/root/chroot_tmpdir/scmroot/plasma-desktop
Cloning into '/var/lib/mock/f41-build-860695-169152/root/chroot_tmpdir/scmroot/plasma-desktop'...
$ git fetch origin 8d9b3cff75a258d278cbee540718767730586e9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-desktop
 * [new ref]         8d9b3cff75a258d278cbee540718767730586e9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d9b3cf 6.2.2