most of these require logout/restart to take effect
# Enable character repeat on keydown
defaults write -g ApplePressAndHoldEnabled -bool false
# Set a shorter Delay until key repeat
/!\ Be very carrefull in your setup : any misconfiguration make all the git config to fail silently ! Go trought this guide step by step and it should be fine 😉
~/.ssh/config
, set each ssh key for each repository as in this exemple: