On current directory if they are git update them if on master or fecth them on other branch and print the one who didn't get merged with origin.

update-git-repository.zsh

#!/bin/zsh
set -e
PROCESS_DIR=${1}
[[ -n ${GIT_DIRS} && -z ${PROCESS_DIR} ]]  && PROCESS_DIR=${GIT_DIRS}

typeset -A notprocessed
autoload -U colors

for gitdir in ${PROCESS_DIR};do
    for i in $gitdir/*/.git(:h);do
        pushd ${i} >/dev/null;
            branch=${${"$(<.git/HEAD)"#ref: }#refs/heads/}
            [[ ${branch} == master ]] && cmd="pull" || { 
                    cmd="fetch";
                    notprocessed[$i]=$branch
            }
            git ${cmd} origin master
        popd >/dev/null
    done
done

[[ -z ${notprocessed} ]] && exit


echo $fg[red]Not updated on master only fetch$fg[default]
for k in ${(k)notprocessed};do
    echo $k : $notprocessed[$k]
done