Hot-reloadable config, or graceful agent restart?

Hi BK team!
We're currently evaluating BuildKite to see if it's a good fit for our build-deploy process long-term. Right now we're in the following situation we need to account for:

* We have an error or potential security issue with the buildkite-agent.cfg config file / environment config
* We want to reload the agents with the rolled-back or updated config
* We don't want to interrupt any builds that are in-flight

Right now our only option is to force-stop / start agents en masse, but this runs the risk of killing inflight jobs.

Is there a mechanism to either

Hot-reload the configuration (buildkite-agent.cfg in our case)
Be able to issue a command to live running agents to restart and pick up latest settings/environment/etc once the current build they're running has completed?

Thank you!