Git Hook to prepend Ticket Number to Commit Message

commit.msg.sample

#!/bin/bash

# JIRA Ticket Number will be prepended to message when running git commit
# Only on branches that have a ticket number
TICKET_NUMBER=$(git symbolic-ref --short HEAD | grep -o '[A-Z]\+-[0-9]\+')
MESSAGE=`cat $1`

if [ ! -z "${TICKET_NUMBER}" -a "${TICKET_NUMBER}" != " " ]; then
    echo "${TICKET_NUMBER} ${MESSAGE}" > "$1"
fi