$ git clone -n https://src.fedoraproject.org/rpms/plasma-drkonqi.git /var/lib/mock/f42-build-side-1-3514750-46091/root/chroot_tmpdir/scmroot/plasma-drkonqi
Cloning into '/var/lib/mock/f42-build-side-1-3514750-46091/root/chroot_tmpdir/scmroot/plasma-drkonqi'...
$ git fetch origin 305663576668e74a0defbf96f6e1db86a8310dac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-drkonqi
 * [new ref]         305663576668e74a0defbf96f6e1db86a8310dac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3056635 6.3.4