Script to automatically add JIRA ticket reference as a prefix to commit messages. File must be within project's `/.git/hooks/`

commit-msg

#!/bin/sh
#
# Commit hook to add a JIRA ticket reference as a prefix to any commit messages.
# NOTE: JIRA ticket number MUST be included in branch name or it does nothing...
# Doesn't make any specific checks, just does it.

BRANCH_NAME=$(git branch | grep '*' | sed 's/* //')
REGEX_TICKET_ID='(SOFT-[0-9]{4})' # SOFT can be replaced by any JIRA team name

# Do the regex search
[[ $BRANCH_NAME =~ $REGEX_TICKET_ID ]]

# regex match
ticket_id=${BASH_REMATCH[1]}

# prefix the JIRA ticket id to commit message ($1)
echo "$ticket_id"': '$(cat "$1") > "$1"