#!/bin/bash

FG_RED="\e[31m"
FG_WHITE="\e[37m"

branch_regex="^On branch ([-A-Za-z0-9_]*)"
git_status=`git status`

if [[ $git_status =~ $branch_regex ]]
then
  echo "On branch ${BASH_REMATCH[1]}"
fi

if [ ${#BASH_REMATCH[@]} -lt 2 ]
then
  echo -e "${FG_RED}Not a git repository.$FG_WHITE"
  exit 1
fi

branch_name=${BASH_REMATCH[1]}

echo -e "${FG_RED}git checkout master$FG_WHITE"
git checkout master

echo -e "${FG_RED}git pull origin master$FG_WHITE"
git pull origin master

echo -e "${FG_RED}git checkout ${branch_name}$FG_WHITE"

https://api.stackexchange.com/2.3/questions/285619/sugg
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