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Introduction

You can ask Copilot different questions about a pull request, from different views within the pull request. For example, you can ask Copilot to summarize a pull request, or explain what has changed within specific files or lines of code in a pull request.

Get a summary of a pull request

You can ask Copilot to summarize a pull request, or to provide information about the status of a pull request.

1. On GitHub, navigate to a pull request in a repository.
2. At the top right of the page, click next to the icon, then click Assistive to open the Copilot Chat panel.
3. If the panel contains a previous conversation you had with Copilot, click the plus sign icon at the top right of the Copilot panel to start a new conversation.
4. At the bottom of the Copilot Chat panel, in the prompt box, type a question and press Enter.

Example prompts

The following prompts are examples of the kind of questions you can ask Copilot to help you find out about a pull request.

• Summarize this pull request
• What is the current status of this pull request?
• What are the main changes in this pull request?

Ask about changes to a specific file in a pull request

You can ask Copilot to explain the changes made to a specific file in a pull request, or to provide information about the status of a file in a pull request.

1. On GitHub, navigate to a pull request in a repository.
2. Click the Files changed tab.
3. Click at the top right of the file, then click Ask Copilot about this diff.
4. Type a question in the prompt box at the bottom of the chat panel and press Enter.

Example prompts

• What are the changes in this file?
• What is the status of this file in the pull request?

Ask about specific lines within a file in a pull request

You can ask Copilot to explain specific lines of code in a pull request, or to provide information about the status of those lines.

1. On GitHub, navigate to a pull request in a repository.
2. Click the Files changed tab.
3. Click the line number for the first line you want to select, then hold down Shift and click the line number for the last line you want to select.
4. Ask Copilot a question, or choose from a list of predefined questions.
   • To ask your own question about the selected lines, to the right of your selection, click the Copilot icon. This displays the GitHub Copilot Chat panel with the selected lines indicated as the context of your question.

Example prompts

• Explain the selected lines of code
• What do these lines of code do?

Ask why a workflow has failed

You can ask Copilot to explain why a workflow has failed in a pull request, and provide suggestions for how to fix the issue.

1. On GitHub, navigate to a pull request in a repository.

2. Scroll to the bottom of the page, then, next to one of the failing checks, click Details.

3. At the top right of the page, click next to the icon, then click Assistive to open the Copilot Chat panel.

4. If the panel contains a previous conversation you had with Copilot, click the plus sign icon at the top right of the Copilot panel to start a new conversation.

5. At the bottom of the Copilot Chat panel, in the prompt box, ask Copilot why the pull request has failed and press Enter.

   Copilot responds with information about why the pull request failed. Copilot may also provide suggestions for how to fix the issue.

6. If Copilot has provided steps to fix the issue, you can follow the steps to resolve the problem.

Example prompts

• Why has this workflow failed?
• What can I do to fix this issue?

Further reading

• Using Copilot to explore a codebase