fix: handle SHA-256 zero OIDs in pre-push - #3783
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mangod12 wants to merge 1 commit into
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Fixes #3664.\n\nGit uses a 64-character all-zero object ID for branch deletions in SHA-256 repositories. The pre-push hook now recognizes zero OIDs for both supported object-ID lengths when skipping deleted refs and checking whether the remote ref exists.\n\nRegression coverage exercises branch-deletion input with both 40- and 64-character zero OIDs.\n\nValidation: uv run --with-editable . --with pytest pytest tests/commands/hook_impl_test.py -k 'pre_push_deleting_branch or pre_push_new_branch' -q (4 passed); git diff --check passes.