Git hook to prepend an issue number to commit messages based on the current branch name

prepare-commit-msg

#!/bin/sh

# Add this file to a git repo's ./git/hooks directory

# Automatically adds branch issue ID to the beginning of every commit message. 
# Branches mush end in "-(int)" like Issue-Name-1234
# Adapted from http://waiting-for-dev.github.io/blog/2014/07/19/append-issue-number-to-commit-message-automatically-with-git-hooks/

# Change the branch issue name for each project
REPONAME='SITEFARM'

BRANCH_NAME=$(git symbolic-ref --short HEAD)
STORY_NUMBER=$(echo $BRANCH_NAME | sed -n 's/.*-\([0-9]\)/\1/p')
if [ x != x${STORY_NUMBER} ]; then
  sed -i.back "1s/^/$REPONAME-$STORY_NUMBER /" "$1"
fi