Bash script to clone all public and private repositories from a GitHub organization using the GitHub REST API and a Personal Access Token. Handles pagination, skips already cloned repositories, and works out-of-the-box for full org backups or migrations.

github-org-backup.sh

#!/bin/bash

# ===== CONFIG =====
ORG_NAME="org"
GITHUB_TOKEN="abcdefgh"
CLONE_DIR="."
PER_PAGE=100

# ==================
mkdir -p "$CLONE_DIR"
cd "$CLONE_DIR" || exit 1

PAGE=1

while true; do
  RESPONSE=$(curl -s \
    -H "Authorization: token $GITHUB_TOKEN" \
    "https://api.github.com/orgs/$ORG_NAME/repos?per_page=$PER_PAGE&page=$PAGE")

  REPO_COUNT=$(echo "$RESPONSE" | jq length)

  if [ "$REPO_COUNT" -eq 0 ]; then
    break
  fi

  echo "$RESPONSE" | jq -r '.[].clone_url' | while read -r REPO_URL; do
    # Inject the token into the HTTPS URL
    AUTH_REPO_URL=$(echo "$REPO_URL" | sed "s|https://|https://$GITHUB_TOKEN@|")

    REPO_NAME=$(basename "$REPO_URL" .git)

    if [ -d "$REPO_NAME" ]; then
      echo "✔ $REPO_NAME already cloned, skipping"
    else
      echo "⬇ Cloning $REPO_NAME"
      git clone "$AUTH_REPO_URL"
    fi
  done

  PAGE=$((PAGE + 1))
done

echo "✅ All repos have been downloaded."