$ git clone -n https://src.fedoraproject.org/rpms/mqttcli.git /var/lib/mock/f40-build-746042-112347/root/chroot_tmpdir/scmroot/mqttcli
Cloning into '/var/lib/mock/f40-build-746042-112347/root/chroot_tmpdir/scmroot/mqttcli'...
$ git fetch origin 390986a8e0a975dfc4f21d17b5d80e8e2c2a239b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mqttcli
 * [new ref]         390986a8e0a975dfc4f21d17b5d80e8e2c2a239b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 390986a Update to 0.2.5 (RHBZ#2241207)