GitHub Setup
Create a GitHub account
Create a GitHub account if you don't already have one.
Fork the Apache Airflow repository
Fork the Apache Airflow repository to your GitHub account.
Click the Fork button at the top-right corner of the repository page (see the image below). This will create your own copy of the repository under your GitHub account.

Clone your fork locally
Clone the repository from your GitHub account:
Replace <your-username> with your GitHub username. For example, my GitHub username is zkan, so I would run:
Add the upstream remote and verify
Add the official Airflow repository as the upstream remote:
You should see both remotes:
origin→ your forkupstream→apache/airflow