Git – How to Use Multiple Git Accounts on One Development Machine

All you need to do is configure your SSH setup with multiple SSH keypairs.

• This link is easy to follow (Thanks Eric):

  http://code.tutsplus.com/tutorials/quick-tip-how-to-work-with-github-and-multiple-accounts--net-22574

• Generating SSH keys (Win/msysgit):

  https://help.github.com/articles/generating-an-ssh-key/

Relevant steps from the first link:

1. Generate an SSH-key:

   ssh-keygen -t ed25519 -C "[email protected]"
   

   Follow the prompts and decide a name, e.g. id_ed25519_example_company.

2. Copy the SSH public-key to GitHub from ~/.ssh/id_ed25519_doe_company.pub and tell ssh about the key:

   ssh-add ~/.ssh/id_ed25519_doe_company
   

3. Create a config file in ~/.ssh with the following contents:

   Host github-doe-company
     HostName github.com
     User git
     IdentityFile ~/.ssh/id_ed25519_doe_company
   

4. Add your remote:

   git remote add origin git@github-doe-company:username/repo.git
   

   or change using:

   git remote set-url origin git@github-doe-company:username/repo.git
   

Also, if you're working with multiple repositories using different personas, you need to make sure that your individual repositories have the user settings overridden accordingly:

Setting user name, email and GitHub token – Overriding settings for individual repos https://help.github.com/articles/setting-your-commit-email-address-in-git/

Note: Some of you may require different emails to be used for different repositories, from git 2.13 you can set the email on a directory basis by editing the global config file found at: ~/.gitconfig using conditionals like so:

[user]
    name = Default Name
    email = [email protected]

[includeIf "gitdir:~/work/"]
    path = ~/work/.gitconfig

And then your work-specific config ~/work/.gitconfig would look like this:

[user]
    name = Pavan Kataria
    email = [email protected]

Thank you @alexg for informing me of this in the comments.

Make a repository clone for each developer on mac, and set user.name and user.email config variable for each clone (project level property). So, in this case each developer have to use own project (just different directories).

To set project level property execute (current directory should be the root of the project):

git config user.name "User Name"
git config user.email "UserEmail@Host"

UPDATE Also if the only reason you are using the same login for different developers is disk space, you can create one clone in /Users/Shared/, configure user.name and user.email variables in $HOME/.gitconfig and voila!