A commit-msg hook for git that will that will reject any commits where the commit message is not prefixed with an task label.

git.hook.check_task

#!/bin/bash

# save the file as <git_directory>/.git/hooks/commit-msg.d/task and chmod +x

#Replace issue and word length(4) with your label to check for
if [ "${1:0:4}" = "TASK-" ]; then
  #Allow maven release plugin to make commits even without a task id
  if [ "${1:0:22}" != "[maven-release-plugin]" ]; then
    echo >&2 Commit Message is missing a Task ID
    exit 1
	fi
fi