gitmm

.gitconfig

[alias]
	# git jm "commit message"
	# will add the Jira ticket ID (e.g.: PROJ-123) to your commit message 
	jm = "!f() { [[ $(git branch --show-current) =~ [A-Z]{2,}-[0-9]+ ]]; git commit -m \"${BASH_REMATCH[0]} ${1}\"; }; f"

gitmm.sh

function gitmm() {
    BRANCH=`git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
    git commit -m "${BRANCH} ${1}"
}