Can't use SHA as `ref`

[chrisluedtke]

README.md:

When passing a SHA as ref, I get:

{
  "message": "No ref found for: 64d9f66f1df87cd18c204770810acaec836dfadb",
  "documentation_url": "https://docs.github.com/rest/reference/actions#create-a-workflow-dispatch-event"
}

Github docs:

ref: Required. The git reference for the workflow. The reference can be a branch or tag name.

[chrisluedtke]

Related: github/docs#590

[lwille]

Indeed, we need to be able to pass the workflow's branch separately from the ref (if ref should be a SHA).

[ThePinzon]

Whats the status on this? It would be fantastic to be able to use a sha.