Batch git submodule sync by received branch name

submodule-sync.sh

#!/bin/bash

set -e

RES=$(echo -en '\033[0m')
RED=$(echo -en '\033[00;31m')
GREEN=$(echo -en '\033[00;32m')
YELLOW=$(echo -en '\033[00;33m')

root=$PWD

# Ask the user for branch name
read -p 'Branch name: ' branchName

echo -e "\nBranch ${GREEN}$branchName${RES}\n"

echo -e "\nBranch has been reached for ${GREEN}$root${RES}"
git checkout $branchName || true
git pull

git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
    while read path_key path
    do
        url_key=$(echo $path_key | sed 's/\.path/.url/')
        url=$(git config -f .gitmodules --get "$url_key")

        currentPath="$root/$path"
        cd $currentPath

        echo -e "\nBranch has been reached for submodule ${GREEN}$path${RES}"
        git checkout $branchName || true
        git pull

        cd $root
    done