Github Hooks auto add commit message

#!/bin/sh

if [ -z "$BRANCHES_TO_SKIP" ]; then
  BRANCHES_TO_SKIP=(master staging develop)
fi

# Exit early if this is part of a rebase
if [ -d ".git/rebase-merge" ] || [ -d ".git/rebase-apply" ]; then
  echo "Skipping prepare-commit-msg hook during rebase"
  exit 0
fi

# Get the currently checked-out branch name
BRANCH_NAME=$(git branch | grep '*' | sed 's/* //')
# will auto transfer branch name to special words
# Eamples of branch to prefix:
#   JIRA-1234              -> JIRA-1234: <COMMIT_MSG>
#   feature/JIRA-1234      -> JIRA-1234: <COMMIT_MSG>
#   JIRA-1234_my_feature   -> JIRA-1234: <COMMIT_MSG>
NEW_BRANCH_NAME=$(git branch | grep '*' | sed 's/* //' | grep -oE 'JIRA-[0-9]+')

# Check if the MERGE_HEAD file is present
if [ -f ".git/MERGE_HEAD" ]
then
    exit 0
fi

# Get the commit message, removing lines that start with a #
MESSAGE=$(cat "$1" | sed '/^#.*/d')
# Check if the commit message is non-empty
if [ -n "$MESSAGE" ]
then
    # Add the branch name and the commit message
    echo "$NEW_BRANCH_NAME: $MESSAGE" > "$1"
else
    echo "Aborting commit due to empty commit message."
    exit 1
fi