Two Git accounts ssh config

gistfile1.txt

In ~/.ssh/ create a file called config with contents based on this:

#user1 account
 Host bitbucket.org-user1
     HostName bitbucket.org
     User git
     IdentityFile ~/.ssh/user1
     IdentitiesOnly yes

 #user2 account
 Host bitbucket.org-user2
     HostName bitbucket.org
     User git
     IdentityFile ~/.ssh/user2
     IdentitiesOnly yes
     
Replace user1 or user2 with your Bitbucket usernames

Generate key with:
ssh-add -K ~/.ssh/user1.rsa

Set remote with: 
git remote set-url origin [email protected]:user1/your-repo-name.git