I am using the latest zigbee2mqtt with this HassIO addon and observed that it always publishes something like

AM MQTT publish: topic 'zigbee2mqtt/bridge/config', payload '{"version":"1.3.0","commit":"unknown","coordinator_firmware":20190109,"log_level":"debug","permit_join":false}'

I am referring to the "commit":"unknown" here. Should be just a minor issue. Or do I miss something?