GitHub Stack PR Official Public Beta: gh stack CLI lets you split large changes into chains of independently reviewable small PRs

On July 30, 2026, GitHub announced that Stacked Pull Requests entered public beta. The supporting gh stack CLI extension allows splitting large changes into a chain of dependent small PRs, enabling independent review for each layer and one-click merging of the entire stack, with native integration with Branch Protection and Merge Queue. Based on the official Changelog and documentation, this article introduces the concept of stacked PRs, installation commands, the workflow from init to submit, as well as the collaboration method with Trunk-based Development.