GHSA-X2QX-6953-8485 GitPython: Unsafe option check validates multi_options before shlex.split transformation

Summary clone validates multioptions as the original list, then executes shlex.split" ".joinmultioptions. A string like "--branch main --config core.hooksPath=/x" passes validation starts with --branch, but after split becomes "--branch", "main", "--config", "core.hooksPath=/x". Git applies the...