How to design a script github sync to gitlab specific destination branch? - gitlab

Question

Such as:
source repo on github Branch master -> destination repo on gitlab Branch main
I'm newbie for github action.
How to design a script entrypoint.sh or new pipeline or example for me, please.
Note: sorry, my english not strong.
Workflows: git-repo-sync.yml
name: build
on:
- push
- delete
jobs:
sync:
runs-on: ubuntu-latest
name: Git Repo Sync
steps:
- uses: actions/checkout#v2
with:
fetch-depth: 0
- uses: chayanbank/git-sync#main
with:
target-url: 'https://gitlab.com/chayanbank/test-react-web.git'
target-branch: 'main'
target-username: 'githubsync'
target-token: ${{ secrets.GITHUBSYNC }}
action.yml
name: 'Git Repo Sync'
description: 'Git Repo Sync enables you to synchronize code to other code management platforms, such as GitLab, Gitee, etc.'
branding:
icon: upload-cloud
color: gray-dark
inputs:
target-url:
description: 'Target Repo URL'
required: true
target-branch:
description: 'Target Repo Branch'
required: true
target-username:
description: 'Target Repo Username'
required: true
target-token:
description: 'Target Token'
required: true
runs:
using: "composite"
steps:
- run: ${{ github.action_path }}/entrypoint.sh
shell: bash
env:
INPUT_TARGET_URL: ${{ inputs.target-url }}
INPUT_TARGET_BRANCH: ${{ inputs.target-branch }}
INPUT_TARGET_USERNAME: ${{ inputs.target-username }}
INPUT_TARGET_TOKEN: ${{ inputs.target-token }}
GITHUB_EVENT_REF: ${{ github.event.ref }}
entrypoint.sh
git remote add target https://${INPUT_TARGET_USERNAME}:${INPUT_TARGET_TOKEN}#${INPUT_TARGET_URL#https://}
case "${GITHUB_EVENT_NAME}" in
push)
git push -f --all target
git push -f --tags target
;;
delete)
git push -d target ${GITHUB_EVENT_REF}
;;
*)
break
;;
esac