Github actions does not run the test for all commits

I need to test all commits that come with a given push or pull request and not just the last commit.

I analyzed some questions and answers here in the community and found the following: [Click Here]

However, I checked the pipeline and I'm getting the following error:

And he's not pushing all the commits, just the last one yet.

My .yaml:

# prettier-ignore
name: CONTINUOUS INTEGRATION

on:
  push:
    branches: [ master, develop ]
  pull_request:
    branches: [ master, develop ]

jobs:
  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [14.x]
        architecture: [x64]
    steps:
    - name: Check out Git repository
      uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - run: |
        for commit in $(git rev-list ${{ github.base_ref }}..${{ github.head_ref }}); do
            git checkout $commit
            echo "run test"
        done
    - name: Use Nodejs ${{ matrix.node-version }} - ${{ matrix.architecture }}
      uses: actions/setup-node@v2
    - name: Yarn [Install]
      uses: borales/actions-yarn@v2.0.0
      with:
        cmd: install
    - name: Yarn [Lint]
      uses: borales/actions-yarn@v2.0.0
      with:
        cmd: lint-check
    - name: Yarn [Test]
      uses: borales/actions-yarn@v2.0.0
      with:
        cmd: test

  deploy:
    if: ${{ github.ref == 'refs/heads/master' }}
    needs: tests
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [14.x]
        architecture: [x64]
    steps:
    - name: Check out Git repository
      uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - run: |
        for commit in $(git rev-list ${{ github.base_ref }}..${{ github.head_ref }}); do
            git checkout $commit
            echo "run test"
        done
    - name: Vercel Deploy
      uses: amondnet/vercel-action@v20
      with:
        vercel-token: ${{ secrets.VERCEL_TOKEN }}
        github-token: ${{ secrets.GITHUB_TOKEN }}
        vercel-args: '--prod'
        vercel-org-id: ${{ secrets.VERCEL_ORG_ID}}
        vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID}}
      env:
       REACT_APP_AUTHOR: ${{ secrets.REACT_APP_AUTHOR }}
       REACT_APP_DESCRIPTION: ${{ secrets.REACT_APP_DESCRIPTION }}
       REACT_APP_KEYWORDS: ${{ secrets.REACT_APP_KEYWORDS }}
       REACT_APP_TITLE: ${{ secrets.REACT_APP_TITLE }}

What is this? How to solve?