Hello Aditya and welcome to the Community.
If you’re needing to connect your GitHub account to Sourcetree then there is a guide which will assist with this. You may find this guide at Connect your Bitbucket or Github account.
I hope this information proves helpful and you’re able to get connected.
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events