prow/config/jobs.go
func (ps Presubmit) CouldRun(baseRef string) bool {
	return ps.Brancher.ShouldRun(baseRef)
}
func (ps Presubmit) CouldRun(baseRef string) bool {
	return ps.Brancher.ShouldRun(baseRef)
}
// CouldRun determines if the presubmit could run against a specific
// base ref