This is a git mirror bare script

smart-mirroring-bare.sh

#!/bin/bash

#  Hey, this is a mirroring bare script, but if you just want a simple backup try this: https://gist.github.com/iandark/d79d08a75f444647afa82744af8fea60
#  This shell script reads a CSV file, where you can pass an origin repository and makes a whole backup into another repository.
#
#  The expected format of the CSV file is below.
#
#    +--------------------------------------------+-----------------------------------------------+
#    | Origin                                     | Backup                                        |
#    +--------------------------------------------+-----------------------------------------------+
#    | git@github.com:username-x/repository-x.git | git@bitbucket.org:username-y/repository-y.git |
#    +--------------------------------------------+-----------------------------------------------+
#    | git@github.com:username-a/repository-a.git | git@gitlab.com:username-b/repository-b.git    |
#    +--------------------------------------------+-----------------------------------------------+
#
#  To use this script, pass your CSV file as a parameter;
#        $ ./smart-mirroring-bare.sh file_name.csv
#
#  PS: You should be able to use SSH and HTTPS (but I only tested ssh).
#
#  PS-2: Probably you have to give this script permission to execute; grant +x.
#        $ sudo chmod +x smart-mirroring-bare.sh

path=$EPOCHSECONDS
pathCsv=$1

if [ "$pathCsv" == "" ]
then
    echo "Please, provide a CSV file."
    echo "Example: ./script.sh file_name.csv"
    exit 0
fi

mkdir -p /tmp/$path

line=1
missing=false
while IFS=, read -r originRepo backupRepo
do
    originRepo="$(echo -e "${originRepo}" | tr -d '[:space:]')"
    backupRepo="$(echo -e "${backupRepo}" | tr -d '[:space:]')"
    folder="${originRepo##*/}"

    if [ "$originRepo" == "Origin" -a "$backupRepo" == "Backup" ]
    then
        continue
    fi

    if [ "$originRepo" == "" -o "$backupRepo" == "" ]
    then
        echo "WARNING: Origin or backup repository is empty or no value set on line" $line
        missing=true
        break
   	elif [[ $originRepo != *git ]] || [[ $backupRepo != *git ]]
    then
        echo "WARNING: You provided an invalid repository URL on your CSV on line" $line
        missing=true
        break
    else
        mkdir -p /tmp/$path
        cd /tmp/$path

        git clone --bare $originRepo

        cd $folder

        git push --mirror $backupRepo
    fi

    ((line=line+1))
done < $pathCsv

if [ "$missing" == true ]
then
   echo "WARNING: Missing valid values in your CSV file. Operation failed. Please use the proper format."
   exit 1
else
   echo "Backup git repositories successfully."
fi

rm -rf /tmp/$path