Content by Sameen Karim (3)

Sameen Karim explains how GitHub uses a swarm of AI agents to stress test new features before release, with agents continuously probing for edge cases and attempts to circumvent rules to help harden the system.

Sameen Karim joins The GitHub Podcast to explain how GitHub’s native stacked pull requests work, including the internal merge architecture changes, how linked PR chains avoid “ghost merges,” and how the team addressed CODEOWNERS-related security loopholes while keeping stacked review workflows practical for engineering teams.

Sameen Karim demonstrates GitHub’s stacked pull requests workflow, showing how to split large feature branches into smaller PR layers, work with stacks from the GitHub CLI using the gh-stack extension, and merge an entire stack efficiently while using Copilot to help generate tests.