What's wrong with this entry?
The Linux/GitHub Actions sandbox permission list has been updated to include the files and directories required for git worktree operations:
/.git/worktrees— worktree reference directory/.git/commondir— points a worktree back to the main.git/.git/config.worktree— per-worktree config overrides
This means Actions workflows that use git worktree add no longer need to disable sandboxing or add manual overrides.
Sandbox filesystem setup (search for "/.git/worktrees") — E1r() at line ~174833 and v1r() at line ~175075
Strings lifted out of the shipped bundle, so the claim above can be checked against them.