Chris Ke worked on the edge-core/sonic-buildimage repository, focusing on improving build stability by managing submodules with Git. He delivered a feature that pins the sonic-host-services submodule to a specific branch in the ec-github repository, ensuring that builds consistently use the correct version of host services. This was achieved by updating the submodule’s URL and branch reference, which reduced version drift and improved reproducibility across the build pipeline. Chris demonstrated skills in submodule management, dependency pinning, and CI-aware configuration, resulting in smoother continuous integration workflows and faster release readiness, though no major bugs were addressed during this period.