Configurable time for detection of new branches for "Automatically manage branches" feature

As a developer I would like to push a branch to a git server and have it validated against a bamboo plan which notifies me and/or to my stash instance in the time that it takes to run the plan (or reasonable wait on a queue).

At present I need to wait up to 5 minutes for the "Automatically manage branches" feature to recognise the new branch before the plan is started.

Please make the detection of new branches time configurable.