"Fork" all repositories from a public organization into a private organization

clone-org.sh

#!/usr/bin/env bash

## this script assumes that you have the GitHub CLI and jq installed.
## before you run this script you should run `gh auth status` to make sure that
## you are logged in, otherwise the script will not work.

while getopts ":t:f:n:" args; do
    case $args in
        t) TO_ORGANIZATION=$OPTARG;;
        f) FROM_ORGANIZATION=$OPTARG;;
        n) NUMBER=$OPTARG;;
       \?) echo "invalid option"
           exit;;
    esac
done

list_repositories() {
    gh repo list $FROM_ORGANIZATION -L $NUMBER --json name | jq -r '.[].name' | tr -d '"'
}

REPOSITORY_LIST=$(list_repositories)

for REPO in $REPOSITORY_LIST; do
    echo "cloning $FROM_ORGANIZATION/$REPO"
    git clone --bare git@github.com:$FROM_ORGANIZATION/$REPO.git

    echo "creating $TO_ORGANIZATION/$REPO"
    gh repo create $TO_ORGANIZATION/$REPO --internal

    cd $REPO

    echo "mirroring from $FROM_ORGANIZATION/$REPO to $TO_ORGANIZATION/$REPO"
    git push --mirror git@github.com:$TO_ORGANIZATION/$REPO.git
    
    cd ..
    rm -rf $REPO

    echo "cloning $TO_ORGANIZATION/$REPO"
    git clone git@github.com:$TO_ORGANIZATION/$REPO.git

    cd $REPO

    echo "setting upstream for $TO_ORGANIZATION/$REPO to $FROM_ORGANIZATION/$REPO"
    git remote add upstream git@github.com:$FROM_ORGANIZATION/$REPO.git
    git remote set-url --push upstream DISABLE
    git remote -v
    
    cd ..
    rm -rf $REPO
done