An alternative to "git submodule foreach --recursive git checkout develop"

subcheckout

#!/bin/bash

# add this function to your .bashrc or .zshrc and then run "source ~/.zshrc"
# - subcheckout param1 param2
# by default subcheckout will change to develop in every submodule
# if you pass a first parameter it will checkout to that branch if exist on submodule
# if you pass a second parameter as default branch if the first branch not exists

function subcheckout() {
  branch=${1:-develop}
  default=${2}

  if [[ ! -d .git ]]; then
		echo "not a git repo"
		return 1
	fi;

	if ! [[ `git submodule status` ]]; then
		echo 'not submodule'
		return 1
	fi

	submodules=($(git config --file .gitmodules --get-regexp path | awk '{ print $2 }'))

	currentDirectory=$(pwd)

	for submodule in "${submodules[@]}"
	do
		printf "\n\nEntering '$submodule'\n"
		cd "$currentDirectory/$submodule"

		if [[ $(git rev-parse --verify --quiet ${branch}) ]]; then
			git checkout ${branch}
		elif ! [[ -z $default ]] && [[ $(git rev-parse --verify --quiet ${default}) ]]; then
			git checkout ${default}
		fi
	done

  cd "$currentDirectory"
}

# add this function to your .bashrc or .zshrc and then run "source ~/.zshrc"
# - subcheckout param1 param2
# by default subcheckout will change to develop in every submodule
# if you pass a first parameter it will checkout to that branch if exist on submodule
# if you pass a second parameter as default branch if the first branch not exists

function subcheckout() {
  branch=${1:-develop}
  default=${2}

  if [[ ! -d .git ]]; then
    echo "not a git repo"
    return 1
  fi;

  git checkout "${branch}"

  if ! [[ `git submodule status` ]]; then
    echo 'no submodules'
    return 1
  fi

  submodules=($(git config --file .gitmodules --get-regexp path | awk '{ print $2 }'))

  currentDirectory=$(pwd)
  for submodule in "${submodules[@]}"
  do
    printf "\n\nEntering '$submodule'\n"
    cd "$currentDirectory/$submodule"

    if [[ $(git rev-parse --verify --quiet ${branch}) ]]; then
      subcheckout "${branch}" "${default}"
    elif ! [[ -z $default ]] && [[ $(git rev-parse --verify --quiet ${default}) ]]; then
      subcheckout "${default}" "${default}"
    fi
  done

  cd "$currentDirectory"
}

Yes @JessicaMulein it's clean, thank youuu

There's an issue or two if you're in a nested repo and not at the root, but seems to work so far ;)