During August 2025, Kevin McGregor addressed a critical cross-platform compatibility issue in the gitlabhq/gitlab-runner repository by delivering a targeted bug fix for shell script execution on z/OS. He replaced the unsupported use of date +%s with an awk-based pseudo-random marker generator, ensuring consistent script flow across Linux, Windows, and z/OS environments. This solution reduced environment-specific failures and improved CI/CD reliability without introducing API changes, allowing for safer deployment. Kevin applied his expertise in Go development, shell scripting, and cross-platform compatibility to implement a minimal-risk fix that enhanced the stability and maintainability of automated build pipelines.