# Git

> Git version control with branching, merging, and rebasing. Use for source control. Use when this capability is needed.

- Skill: `tomevault-io/git-11` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/git-11`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/git-11/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/git-11

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# Git

Git is the foundation of modern software. In 2025, features like **Sparse Checkout** and **Scalar** (for monorepos) are becoming mainstream.

## When to Use

- **Always**: Use it for everything. Text files, config, code.
- **Bisect**: Finding bugs by binary search.

## Core Concepts

### Graph

Commits form a DAG (Directed Acyclic Graph).

### Rebase vs Merge

- **Merge**: Preserves history, creates bubbles.
- **Rebase**: Rewrites history, linearizes.

### Worktrees

Checkout multiple branches of the same repo in different folders simultaneously.

## Best Practices (2025)

**Do**:

- **Use `git switch` / `git restore`**: The modern alternatives to the overloaded `git checkout`.
- **Use `git maintenance`**: Speed up fetch/clone in the background.
- **Sign Commits**: Use SSH keys to sign commits (`Commit Signing`).

**Don't**:

- **Don't force push to shared branches**: `git push --force-with-lease` is the safer alternative.

## References

- [Git Documentation](https://git-scm.com/doc)

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