$ git clone -n https://src.fedoraproject.org/rpms/plasma-drkonqi.git /var/lib/mock/f42-build-side-1-3578395-46814/root/chroot_tmpdir/scmroot/plasma-drkonqi
Cloning into '/var/lib/mock/f42-build-side-1-3578395-46814/root/chroot_tmpdir/scmroot/plasma-drkonqi'...
$ git fetch origin b825d945d927b7b8bc8f8699ede4da5529f191ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-drkonqi
 * [new ref]         b825d945d927b7b8bc8f8699ede4da5529f191ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b825d94 6.4.1