git config --global user.name "k2patel"
git config --global user.email "k2patel@live.com"

<note tip>replace location with your desired location</note>

mkdir -p /data/git/bumper.git
cd /data/git/bumper.git

git --bare init

<note tip>replace project location with desired location</note>

cd /data/project/bumper/
git init
git add .
git commit -m "Initial Commit"

For Local

git remote add origin /data/git/bumper.git
git push origin master

For Remote

git remote add origin ketan@reposerver:/data/git/bumper.git
git push origin master

To do backup on existing git repo please follow steps below.
Login to master machine.
Considering you already have key based access between master and backup server.

git remote -v

cd $HOME
git --bare init --shared test.git

after you taste your login.

cd ~/test.git
git remote add backup --mirror git@backup.k2patel.com:test.git
git push backup
cat .git/config

Result of last line should should contain text like the next block.

# [remote "Backup"]
#   url = git@backup.k2patel.com:test.git
#   fetch = +refs/*:refs/*
#   mirror = true

#!/bin/bash
#Build by. kpatel
# k2patel@hotmail.com
 
## Nightly Backup of Repository.
 
## Variables -- ( change According to your need )
repohome=(/home/backup/test.git /home/backup/test2.git )
 
export receipients="k2patel@sify.com k2patel@hotmail.com"
 
## Static 
export git=$(which git)
 
## Methods 
notify(){
    for n in $receipients; do
        echo $1 | /bin/mail -s "[GIT] Backup $k2  Failed" $n
    done
}
 
## Programm
for k2 in ${repohome[@]}; do
    echo $k2
    if cd $k2 && $git push backup ; then
        echo "done"
    else
        notify "GIT Backup Failed, $k2"
    fi
done

following command can be used for following purpose :
To discard all local changes and restore it to the remote repository.
When you have error Your branch is ahead of 'origin/master'

git reset --hard origin/master
git pull

git clone --recursive git@github.com:k2patel/repo.git

git submodule update --init --recursive

git submodule update --init modules/repo

git submodule foreach git pull origin master

git submodule update --init