Worked on the AnacondaRecipes/aggregate repository to integrate and manage external feedstock submodules, focusing on reproducibility and maintainability. Delivered two new submodule integrations by updating .gitmodules and initializing submodules at specific commits, ensuring precise dependency tracking. Subsequently, updated submodule references for backtrace-feedstock and y-py-feedstock to compatible revisions, supporting Python 3.13 and improving build stability. Emphasized Git submodule management to reduce drift between components and enhance CI reliability across environments. The work centered on careful version control using git, with a technical approach that prioritized consistent submodule states, enabling reproducible builds and laying groundwork for future downstream development.