serf query with timeout option is waiting on the time irrespective of the event completion.

Hello All,
I have an interesting issue using Serf query -timeout option.
I am executing a workflow where each step takes a max-time of 2minutes.
I am running 10 queries in which some queries depend on the completion of others. A timeout='120s", serf query is waiting for all the 120s irrespective of the completion of the event/query.
My event/query sometimes completes within a minute. In that case waiting for all the 120s doesn't add value to this Senario.
Can you please guide me for some work around to achieve the same.

Example:
-bash-4.1$ date;serf query -timeout="50s" runtest dummy;date
Tue Jul 19 23:36:03 PDT 2016
Query 'runtest' dispatched
Ack from ''
Total Acks: 1
Total Responses: 0
Tue Jul 19 23:36:53 PDT 2016

In the above example, the event waits untill all the 50s to exit, even though my query completed in the first 2s.

Thanks
Sasikant