Temporary increase runahead limit without reload?

I don’t want to go through our process to review, merge, deploy (and can’t given the time of day) to update a workflow. I was wondering if there was a way to modify the runahead limit temporarily, or the only way is via a reload?

The runahead limit can be changed by editing the flow.cylc file, then either reloading or restarting the workflow.

There is no interface to hotpatch it on the fly.