-echo
-echo "INFO: Updating releng -> ${RELENG_BRANCH}"
-if [ ! -d ${RELENG_REPO_DIR} ]; then
- git clone ${RELENG_REPO} ${RELENG_REPO_DIR}
-fi
-cd ${RELENG_REPO_DIR}
-# reset remote so we know origin is valid
-git remote set-url origin ${RELENG_REPO}
-# fetch the exact ref
-git fetch --tags origin ${RELENG_BRANCH} || true
-# purge pyc files
-find . -name '*.pyc' -delete
-git_checkout ${RELENG_BRANCH}