Need to write a Git commit in Japanese? JTC development environments often mandate specific local formats to ensure QA teams and PMs can accurately trace source history.
Drawing from my experience as an OBD engineer at a major automaker, I’ve compiled the essential Git commit templates and snippets you need to deploy professional-grade Japanese messages instantly.
Common Verbs and Prefixes for Japanese Git Commit Messages
Many Japanese teams use prefixes similar to “Conventional Commits” (feat, fix, docs, etc.) while keeping the description in Japanese. It is very useful to remember combinations like the following examples:
feat (New Feature): feat: ユーザーログイン機能を追加 (Added user login feature)
fix (Bug Fix): fix: パスワードリセット時のエラーを修正 (Fixed error during password reset)
docs (Documentation): docs: README.mdにインストール手順を追記 (Added installation steps to README.md)
refactor (Refactoring): refactor: データベース接続処理の最適化 (Optimized database connection processing)Practical Japanese Git Commit Message Examples
Before looking at templates, it helps to see how commit messages are actually written in Japanese development teams. Below are some practical examples commonly used in JTC environments.
feat: ユーザー登録機能を追加 (Add user registration feature)
fix: ログインAPIのレスポンスエラーを修正 (Fix response error in login API)
docs: README.mdにセットアップ手順を追記 (Add setup instructions to README)
refactor: 認証処理のコード構造を整理 (Refactor authentication logic structure)Most Japanese teams follow a hybrid pattern: an English prefix combined with a Japanese description. This format improves readability for both Japanese and international developers.
A Simple Japanese Git Commit Template
Many Japanese development teams encourage developers to follow a simple structure when writing commit messages. Using a consistent template helps teams quickly understand why a change was made and what was modified.
A commonly used template looks like this:
Prefix: Short description of the change
Reason: Why this change was necessary
Action: What was modified or implementedExample:
fix: APIレスポンスのタイムアウトエラーを修正
Reason: DBクエリが重すぎたため
Action: インデックスを追加してクエリ処理を高速化Why Some JTC Dev Teams Still Use Japanese for Git Commits
In Japanese development environments, especially at established large corporations (JTCs), the source code change history is treated as a critical piece of project documentation. It’s not just the engineers writing the code who refer to Git history; members from non-engineering departments—such as QA teams, project managers, and customer support—also review these logs. For them, accurate Japanese allows for a faster understanding of the “Why” and “What” compared to English technical jargon.
During my time as an OBD engineer at an automaker, the checks for commit messages were incredibly strict. If we didn’t leave accurate Japanese regarding why a specific error code was added, it would cause massive confusion years later during cross-departmental testing. Even a slight nuance error in a word like “修正” (fix) could trigger a 30-minute explanatory meeting. In such environments, the history is valued as a “shared company asset” rather than just a developer’s log.
Mastering Developer Soft Skills: Adapting to Local Team Standards
Adapting to these high-precision documentation standards is more than just a chore; it is a vital part of your Developer Soft Skills. In the Japanese market, the ability to leave a history that follows complex team protocols is a key differentiator for bilingual talent.
Engineers who can naturally bridge the gap between technical implementation and localized project management requirements will see their professional value significantly enhanced. Mastering this “Administrative Debt” management is a strategic move for your long-term success in Japan.
(If you are struggling with “switching modes” in communication, also refer to my “Keigo Cheat Sheet for Engineers“.)
Mastering the Nuance: “修正（Shusei）” vs. “追加（Tsuika）”
Choosing the right verb is the ultimate sign of consideration for your reviewer. In Japanese, subtle differences in nuance can change the reception of your work:
- 修正 (Shusei / Fix, Correct): Restoring a bug or incorrect spec to its correct state.
- 追加 (Tsuika / Add): Newly creating a completely new file, logic, or feature.
- 変更 (Henko / Change, Update): Modifying an existing specification to a different, new requirement.
- 削除 (Sakujo / Remove, Delete): Erasing redundant code or files.
The English-Japanese Hybrid Strategy: Efficiency Over Perfection
No matter how much you study, striving for “perfect” Japanese in every commit is exhausting and often unnecessary. The most effective approach used in modern JTCs is the “Hybrid Format”: keeping technical terms (DB, API, UI) in English while using Japanese for verbs and reasons.
- Pattern:
[Prefix]: [English Target] + [Japanese Verb] - Example:
fix: APIレスポンスのタイムアウトエラーを修正
This “Hybrid Strategy” bridges the gap between technical clarity and local documentation requirements, ensuring your history is readable for both international and local stakeholders.
Leveraging AI: Automated Tools for Technical Japanese
If you are still worried about grammar or find manual input tedious, leverage the “Debuggers” of language:
- GitHub Copilot / ChatGPT: Generate natural Japanese commit messages based on your code diffs.
- Professional Review (italki): For critical project documentation, have a pro check your technical Japanese to ensure it sounds like a native senior engineer.
Conclusion: Elevate Your Developer Soft Skills with Clear Git Commits
Writing clear and accurate Git commit messages is more than just a task report; it is a vital part of your Developer Soft Skills, showing consideration for your team by leaving a readable history. It is the first step toward building trust across the language barrier.
Action Step: Set Up Your Global Git Hooks with a Bilingual Template Today
Try incorporating what you learned today into your own development environment. Simply create a template file like .gitmessage and configure it in your Git settings to call up a format that meets your team’s standards at any time.
If you want to dive deeper into team development best practices and Git operations, gaining systematic knowledge from specialized books is also highly effective.
Next Steps: Level Up Your Navigation
This article is a sub-module of Layer 2. To master the complete technical documentation protocol or explore the entire career blueprint, choose your next destination:
🔼 Back to Layer 2: Deciphering the Specs — Technical Japanese & Legacy Docs (Return to the module overview: Excel-as-IDE, Legacy PDF Archaeology, and Technical Kanji)
🏠 Return to The Engineer’s Blueprint: Decoding Japanese Workplace Culture (Access the Master Manual including Genba Communication, Career Strategy, and Business Etiquette)
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