I’m new to GitHub Actions so I don’t quite have the Googlefu to solve my problem

Simplifying, I have something like

jobs:
  test_run_a:
    uses: ./.github/workflows/test.yml
    with:
      param: "A"
    secrets: inherit

in the other file test.yml I have

name: test

on:
  workflow_call:
    inputs:
      param:
          required: true
          type: string

jobs:
  unit-test:
    timeout-minutes: 60
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    steps: ...

so currently, all jobs that use test.yml run on ubuntu and mac. I would like to make it so that it is the outer job (in this case test_run_a) that defines the OS matrix.

Basically, I would like to make it so that job test_run_a runs on both OS, and I can define another test_run_b that runs only on mac, with both of them using the shared job code in test.yml

I have tried to move the strategy out into the outer job, but it does not work. Thank you in advance