odd behavior for atomic install when using dockertar

[jirib]

# atomic --debug install --storage=ostree dockertar:/root/ovirt.tgz                                                                                                                           
Namespace(_class=<class 'Atomic.install.Install'>, args=[], assumeyes=False, debug=True, display=False, func='install', ignore=False, image='dockertar:/root/ovirt.tgz', name=None, opt1=None, opt2=None, opt3=None, profile=False, remote=None, setvalues=None, storage='ostree', system=False, system_package='auto', user=False)
tar: etc/.wh.redhat-release: implausibly old time stamp 1970-01-01 00:00:00
Extracting to /var/lib/containers/atomic/ovirt.tgz.0
systemctl daemon-reload
systemd-tmpfiles --create /etc/tmpfiles.d/ovirt.tgz.conf
systemctl enable ovirt.tgz

# atomic host status
State: idle
Deployments:
● rhel-atomic-host-ostree:rhel-atomic-host/7/x86_64/standard
                   Version: 7.4.2 (2017-10-04 02:35:38)
                    Commit: 408c3cc96af3444733fc00068bcf0c43aa6c640156b089ed3e596cb7d68a5b01
              GPGSignature: Valid signature by 567E347AD0044ADE55BA8A5F199E2F91FD431D51