$ git clone -n https://src.fedoraproject.org/rpms/qm.git /var/lib/mock/f41-build-side-1-2662567-28815/root/chroot_tmpdir/scmroot/qm
Cloning into '/var/lib/mock/f41-build-side-1-2662567-28815/root/chroot_tmpdir/scmroot/qm'...
$ git fetch origin 58e55b07360065e9b60bac6cb886491f72e0c731:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qm
 * [new ref]         58e55b07360065e9b60bac6cb886491f72e0c731 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58e55b0 Update to 0.6.7 upstream release