During a focused month of development, Cornelius enhanced the fmeum/bazel repository by addressing a reliability issue in the repository module. He restructured the DownloadManager lifecycle to be scoped per command, ensuring that command-line option changes were properly respected and eliminating the risk of stale shared state. This involved removing the DownloadManager instance from RegistryFactoryImpl and injecting it directly into relevant SkyFunctions, thereby tying its lifecycle to individual command executions. Working primarily with Java and leveraging expertise in build systems and dependency management, Cornelius delivered a targeted bug fix that improved the consistency and predictability of repository-related operations in Bazel.