Limit action to only trigger once per SHA

I have an Action that triggers on [labeled] however I really only want it to trigger once per SHA.  Is that possible?

I suppose I have a problem that the first trigger context might not contain the label I want to see, but I am wanting to debug this way.

According to your request, the key is how to determine if the workflow had been triggered for a commit SHA, but I’m afraid there is no any usable way to track this.