If you have an error
git clone firstname.lastname@example.org:kittycooldew/ansible_cluster.git fatal: Could not read from remote repository.
If you encounter an SSH authentication issue, do add your key to the SSH keychain:
If you encounter an error such as this
Could not open a connection to your authentication agent.
Start the process and add key to SSH Keychain
eval `ssh-agent -s` ssh-add ~/.ssh/id_rsa
Try the git clone again. It should work