Git hook to put Jira issue ID from branch name to commit message

commit-msg.sh

#!/bin/sh

# Hook automatically adds Jira issue ID to the commit message 
# from the branch name.
# For example, if you're working in a branch `JIRA-123_something`,
# each commit message will be prepended with `JIRA-123 `.
# Copy this file as `$YOUR_GIT_REPO/.git/hooks/commit-msg` and make it executable.

TICKETS=$(git rev-parse --abbrev-ref HEAD | grep -Eo '[A-Z]+-[0-9]+' | tac)
#echo "$TICKETS"

for TICKET in $TICKETS
do
    #echo $TICKET
    sed -i "1s/^/$TICKET /" $1
done

exit 0