Actions workflow_run not giving me branch information

When running the workflow:

on:
  workflow_run:
    workflows: [CI]
    branches: [main, feature/*]
    types: [completed]

...

and those 2 branchs trigger the workflow, there is no way of knowing which branch was the one to trigger it.

as in:

...

foo:
    steps:
        - if: ${{ github.event.branch == "main" }}
        - if: ${{ github.event.branch == "feature/foo-bar" }}