Git commit hook to automatically add branch name to every commit message. Put in ".git/hooks/commit-msg" and give the file execute rights.

commit-msg

#!/bin/sh
#
# Automatically adds branch name to every commit message.
#
NAME=$(git branch | grep '*' | sed 's/* //')
if [ -n "$NAME" ]
then
if [ "$NAME" = "master" ]
then
echo $(cat "$1") > "$1"
else
echo "$NAME"': '$(cat "$1") > "$1"
fi
fi

I've found that adding a --no-color params prevents these kind of commit messages:

[32mfeature/ISS-666[m: WIP on ISS-666

Line 5 then becomes:

git branch --no-color | grep '*' | sed 's/* //'