Collaborators can decide whether to accept or reject your pull request. They may also request for some changes. This video shows you how the reviewing and process looks like.
Timestamps:
1. Merging a pull request: 00:40
2. Reviewing a pull request: 01:31
3. Editing a pull request: 04:40
Links:
1. Text / Podcast version: https://zellwk.com/blog/edit-pull-request
2. Website: https://zellwk.com