gitwho

Commit as the right person, every time. Never accidentally commit as the wrong author when juggling multiple clients or organizations.

Install

npm install -g @anscodelab/gitwho@latest

Then run once to install the global hook:

gitwho init

How it works

gitwho init installs a global prepare-commit-msg hook via git config --global core.hooksPath. The hook fires on every commit in every repo.

First commit in a new repo — the hook blocks and shows which command to run:

⚠  No profile set for this repo.
   Your commit has been saved — run:

    gitwho use personal   # An Nguyen <you@personal.com>
    gitwho use            # interactive picker

Run gitwho use — picks a profile and automatically replays your saved commit:

$ gitwho use

  ❯ personal   An Nguyen <you@personal.com>
    client-a   An Nguyen <you@clienta.com>

✓ Identity set: [personal] An Nguyen <you@personal.com>

  Replaying saved commit: "fix login bug"
✓ [master a1b2c3] fix login bug

All subsequent commits in the same repo pass through instantly — no interruption.

The hook also chains to any existing prepare-commit-msg hook in the repo (husky, commitlint, etc.) so existing tooling keeps working.

Commands

gitwho <command>

Getting started:
  1. gitwho init        install the global hook (run once)
  2. gitwho add         save a profile (name + email)
  3. git commit ...      hook guides you from there

Commands:
  init              Install global hook
  add               Save a new identity profile
  list              List profiles and this repo's identity
  use [alias]       Set profile for this repo (interactive if no alias)
  whoami            Show this repo's current identity
  update <alias>    Update a profile's name or email
  remove <alias>    Remove a saved profile
  unset             Clear this repo's identity

gitwho init

Installs the global hook. Run once after installing.

gitwho add

Interactive — prompts for alias, name, email:

$ gitwho add
Alias:  personal
Name:   An Nguyen
Email:  you@personal.com
✓ Profile 'personal' saved.

gitwho list

Shows saved profiles and this repo's active identity:

This repo:  [personal]  An Nguyen <you@personal.com>

Saved profiles:
  * personal        An Nguyen <you@personal.com>
    client-a        An Nguyen <you@clienta.com>

gitwho use [alias]

With an alias: sets identity immediately and replays any saved commit. Without an alias: shows an interactive picker.

gitwho whoami

Quick status for the current repo:

[personal]  An Nguyen <you@personal.com>

gitwho unset

Clears this repo's identity. Next commit will be blocked again until you run gitwho use.

Profiles

Saved in ~/.git-who/profiles.json:

{
  "profiles": [
    { "alias": "personal", "name": "An Nguyen", "email": "you@personal.com" },
    { "alias": "client-a", "name": "An Nguyen", "email": "you@clienta.com" }
  ]
}

You can edit this file directly.

Requirements

• Node.js 18+
• Git 2.9+ (for core.hooksPath)
• Git Bash on Windows (PowerShell is not supported for hook execution)