Git helper to generate formatted deploy message

deploy_git_log.txt

# In your ~/.gitconfig
[alias]
  deploy = "!source ~/.githelpers && deploy_git_log"


# Add to or create ~/.githelpers and chmod +x
#!/bin/bash
deploy_git_log() {
  ref=${1:-'master'}

  date +"%d %b %Y"
  git log --pretty="tformat:  - %s [%an]" origin/$ref..$ref | 
  sed -Ee 's/\[([a-zA-Z]).+ ([a-zA-Z]).+\]$/[\1\2]/'
}