A pull request is created to collaborate on changing the repository. These changes produce a branch that ensures that the main branch remains clean and tidy.
Submissions are different from commits
Before you can open a pull request, you must create a branch and then add the commit to the branch. Pull requests can only be opened when there is a difference between your branch and the upstream branch.
1. Switch to the library you want to change
2. In the "Branch" menu, select the branch that contains your submission.
3. On the right side of the "Branch" menu, click Compare and Review
4. The comparison page will automatically select the basic and contrast branches . To change, click Edit
5. On the Compare page, click Create Pull Request
6. In your pull request, enter a title and description
7. Click Create Pull Request
When your pull request has been reviewed, it can be merged into the library .
reference :https://help.github.com/articles/creating-a-pull-request/
SOURCE-https://github.com/zhangruinian/github-help/blob/master/creating%20a%20pull%20request%20%e5%88%9b%e5%bb%ba% 20pull%20%e8%af%b7%e6%b1%82.md
GitHub tips for creating a pull request to create pulling requests