Normal Version (no Git Submodules for content)

name: Deploy Quartz site to GitHub Pages
 
on:
 push:
   branches:
     - v4
 
permissions:
 contents: read
 pages: write
 id-token: write
 
concurrency:
 group: "pages"
 cancel-in-progress: false
 
jobs:
 build:
   runs-on: ubuntu-22.04
   steps:
     - uses: actions/checkout@v3
       with:
         fetch-depth: 0 # Fetch all history for git info
     - uses: actions/setup-node@v3
       with:
         node-version: 20
     - name: Install Dependencies
       run: npm ci
     - name: Build Quartz
       run: npx quartz build
     - name: Upload artifact
       uses: actions/upload-pages-artifact@v2
       with:
         path: public
 
 deploy:
   needs: build
   environment:
     name: github-pages
     url: ${{ steps.deployment.outputs.page_url }}
   runs-on: ubuntu-latest
   steps:
     - name: Deploy to GitHub Pages
       id: deployment
       uses: actions/deploy-pages@v2

Submodule Version:

edit, replace lines 21-23 with this:

     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Fetch all history for git info
         submodules: true # Fetch all submodules