(Jordon Garrett is working as a DevSecOps engineer in an IT company situated in Chicago,...

Git hooks determine success or failure based on the exit code of the executed script. An exit code of0indicates successful execution, while any non-zero value signals failure and causes Git to abort the commit. In Jordon’s setup, a Bash shell calls a PowerShell script to perform pre-commit checks. If the PowerShell script exits with code 0, Git interprets this as a successful hook execution and allows the commit to proceed. Exit codes such as 1, 2, or 3 indicate errors or policy violations and will block the commit. This mechanism ensures that security or quality checks enforced by the pre-commit hook must pass before code is committed. Using exit codes in this way is a standard and reliable approach in cross-platform DevSecOps automation during the Code stage.

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