fix(patch): prevent git config path errors in patch-commit (#10640)

* fix(patch): prevent git config path errors in patch-commit

Replace HOME='' with GIT_CONFIG_GLOBAL to bypass user config
without breaking home directory resolution in restricted environments.

Fixes #6537

* fix(patch): prevent git config path errors in patch-commit

Use GIT_CONFIG_NOSYSTEM and GIT_CONFIG_GLOBAL to bypass git config
without breaking HOME path resolution in restricted environments.

Fixes #6537
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