Update Git Repository documentation with GitHub Copilot integration

Author: houghj16

docs/version-control/git-manage-repository.md

@@ -19,6 +19,12 @@ Version control with Visual Studio is easy with Git.  And, you can work remotely
 
 To open the **Git Repository** window, choose **View** > **Git repository** (or press **Ctrl**+**0**, **Ctrl**+**R**), or press **Ctrl**+**Q** and under **Features**, search for **Git repo**.
 
+## Explain a commit with GitHub Copilot Chat
+
+With Visual Studio 2022 version 17.10 preview 2 and later and the GitHub Copilot extensions, you can use AI to generate a detailed commit description that describes your repository's changes. Press the Explain option to request that GitHub Copilot create a commit explanation. To install GitHub Copilot, see [Install and manage GitHub Copilot in Visual Studio](../ide/visual-studio-github-copilot-install-and-states.md).
+
+:::image type="content" source="media/vs-2022/repository-commit-copilot.png" alt-text="Screenshot of the explain button to request that GitHub Copilot create a commit explanation.":::
+
 ## Change the last commit (amend)
 
 Updating the last commit is called *amending* in Git, and it's a common use case. Sometimes you just need to update your commit message, or you might need to include a last-minute change.