git-clone-all

#!/usr/bin/env bash

set -e

if [ -z "$1" ]
then
    echo "$0 [git repository]"
    exit 1
fi

git clone --bare --recursive "$1" bare
git -C bare ls-remote --quiet --heads | cut -d $'\t' -f2 | while read ref
do
    branch="$(basename "$ref")"
    git clone --recursive bare -b "$branch" "$branch"
    git -C "$branch" remote set-url origin "$1"
done