| set -euo pipefail | |
| # Fetch public references outside the tutorial repository so they are not | |
| # accidentally vendored into the Datawhale release. | |
| DEST="${1:-${TMPDIR:-$HOME/.cache/atec2026-reference}}" | |
| mkdir -p "$DEST" | |
| clone_or_update() { | |
| local url="$1" | |
| local name="$2" | |
| if [[ -d "$DEST/$name/.git" ]]; then | |
| git -C "$DEST/$name" fetch --depth=1 origin main | |
| git -C "$DEST/$name" reset --hard FETCH_HEAD | |
| else | |
| git clone --depth=1 "$url" "$DEST/$name" | |
| fi | |
| } | |
| clone_or_update \ | |
| "https://github.com/cicaburnwood-crypto/SLAM_ATEC2026_Simulation_Challenge.git" \ | |
| "SLAM_ATEC2026_Simulation_Challenge" | |
| clone_or_update \ | |
| "https://github.com/StevenLiudw/Clear_ATEC2026_Simulation_Challenge.git" \ | |
| "Clear_ATEC2026_Simulation_Challenge" | |
| printf 'references available under %s\n' "$DEST" | |