https://www.youtube.com/watch?v=VOakLctEC2Q

Steps

• Fork the repo. In my case I am syncing this repo (which is our target-repo) https://github.com/hasanshahriar32/project
• The repo that is forked in my account is (my-repo) https://github.com/paradox-bd/programming-hero
• Now in my account, I go to the gitHub marketplace to this link package. Sync and merge upstream repository with your current repository · Actions · GitHub Marketplace. I am gonna use this package. You can skip this step and follow along next steps.
• Now go to your repository. and make a file in following method.
• add file> create new file and then name like my-repo/.github/workflows/sync.yml . For e.g. programming-hero/sync.yml at main · paradox-bd/programming-hero (github.com)
• Now put this code the editor

name: Sync Upstream

env:
  # Required, URL to upstream (fork base)
  UPSTREAM_URL: "<https://github.com/hasanshahriar32/project.git>"
  # Required, token to authenticate bot, could use ${{ secrets.GITHUB_TOKEN }} 
  # Over here, we use a PAT instead to authenticate workflow file changes.
  WORKFLOW_TOKEN: ${{ secrets.WORKFLOW_TOKEN }}

# This runs every day on 1801 UTC
on:
  schedule:
    - cron: '0 6 * * *'
  # Allows manual workflow run (must in default branch to work)
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: GitHub Sync to Upstream Repository
        uses: dabreadman/sync-upstream-repo@v1.3.0
        with: 
          upstream_repo: <https://github.com/hasanshahriar32/project.git>
          upstream_branch: main
          downstream_branch: main
          token: ${{ secrets.WORKFLOW_TOKEN }}

• Note: At the place of upstream_repo put your target repo link like. https://github.com/hasanshahriar32/target-repo.git
• Note 2: At schedule, we used ( cron: '0 6 * * *' ). This means the automation takes place once a day at 12pm. You can change it and set it as you wish.
• Now, click at commit new file and finish it.
• Wait!! there’s a thing yet to be done. At the place of token, you set token: ${{ secrets.WORKFLOW_TOKEN }} . This means you need to linkup your personal account token to current repo.(my-repo)
• To create a new token go to this link Personal Access Tokens (github.com) and click generate new token. Make sure to check the workflow and set the Expiration as you wish. And name the token. Finally click generate.
• Copy the token and save somewhere safe.
• Now go to your repository and follow along