$ git clone -n https://src.fedoraproject.org/rpms/plasma-nm.git /var/lib/mock/f42-bootstrap-3533864-46421/root/chroot_tmpdir/scmroot/plasma-nm
Cloning into '/var/lib/mock/f42-bootstrap-3533864-46421/root/chroot_tmpdir/scmroot/plasma-nm'...
$ git fetch origin 7a0232c34cc7b92f74645fc8ce14d2e016557cd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-nm
 * [new ref]         7a0232c34cc7b92f74645fc8ce14d2e016557cd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a0232c 6.3.5