What
When Claude Code builds a git command, it can now pass extra one-off settings using git's -c key=value option. This option changes a git setting for that single command only and leaves your saved configuration alone. The mode that adds these settings is called "pinned", and it is the default.
Why
Git commands run by Claude Code can now behave the same way regardless of some of your local git settings.
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The finding does not list which settings are added or which git calls use a mode other than pinned.