Git Bash Windows Setup

.bashrc

#!/bin/bash
eval `ssh-agent -s`
ssh-add ~/.ssh/*_rsa

SSH_ENV=$HOME/.ssh/environment

# start the ssh-agent
function start_agent {
    echo "Initializing new SSH agent..."
    # spawn ssh-agent
    /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
    echo succeeded
    chmod 600 "${SSH_ENV}"
    . "${SSH_ENV}" > /dev/null
    /usr/bin/ssh-add
}

if [ -f "${SSH_ENV}" ]; then
     . "${SSH_ENV}" > /dev/null
	 ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
	    start_agent;
	}
else
    start_agent;
fi

.ssh\config

Host bitbucket.org
 IdentityFile ~/.ssh/bitbucket_rsa

Setup

ssh-keygen