Multiple git account 깃 복수계정

2026-02-04 · git

The cleanest ways to use multiple Git accounts locally are usually these two:

Separate SSH keys per account (recommended — the most reliable)
Use different user.name / user.email per repository (this only changes the commit author — push permissions/auth are separate)

Below is a standard setup for the case where both Account A and Account B are GitHub accounts, fully separated using SSH.

1) Generate SSH keys for each account

ssh-keygen -t ed25519 -C "accountA@email.com" -f ~/.ssh/id_ed25519_github_a
ssh-keygen -t ed25519 -C "accountB@email.com" -f ~/.ssh/id_ed25519_github_b

2) Create host aliases in `~/.ssh/config`

Host github-a
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_ed25519_github_a
  IdentitiesOnly yes

Host github-b
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_ed25519_github_b
  IdentitiesOnly yes

3) Add the public keys to each GitHub account

Copy each public key and add it in GitHub → Settings → SSH and GPG keys.

cat ~/.ssh/id_ed25519_github_a.pub
cat ~/.ssh/id_ed25519_github_b.pub

4) Test the connection

ssh -T git@github-a
ssh -T git@github-b

If you see “Hi username!” for each one, it worked.

5) Decide which account the repo should use (clone/connect)

For example, if you want to push using Account B:

When cloning a new repo

git clone git@github-b:USERNAME/REPO.git

If the repo is already cloned, just change the remote URL

git remote set-url origin git@github-b:USERNAME/REPO.git

6) Separate commit author per repository (optional)

Inside the repo folder:

git config user.name "AccountB Name"
git config user.email "accountB@email.com"

Check:

git config user.name
git config user.email
git remote -v

Key takeaway for a GitHub Pages repo

Push authentication (permissions/login) is determined by whether origin uses git@github-a: or git@github-b:
The email shown in commits is determined by git config user.email