-rm -rf ${F_DIR}/* || exit 1
-git clone --quiet https://github.com/saltstack-formulas/docker-formula.git ${F_DIR}/docker
-( cd docker && git checkout --quiet tags/"${DOCKER_TAG}" -b "${DOCKER_TAG}" )
-
-git clone --quiet https://github.com/saltstack-formulas/locale-formula.git ${F_DIR}/locale
-( cd locale && git checkout --quiet tags/"${LOCALE_TAG}" -b "${LOCALE_TAG}" )
-
-git clone --quiet https://github.com/saltstack-formulas/nginx-formula.git ${F_DIR}/nginx
-( cd nginx && git checkout --quiet tags/"${NGINX_TAG}" -b "${NGINX_TAG}" )
-
-git clone --quiet https://github.com/saltstack-formulas/postgres-formula.git ${F_DIR}/postgres
-( cd postgres && git checkout --quiet tags/"${POSTGRES_TAG}" -b "${POSTGRES_TAG}" )
-
-git clone --quiet https://github.com/saltstack-formulas/letsencrypt-formula.git ${F_DIR}/letsencrypt
-( cd letsencrypt && git checkout --quiet tags/"${LETSENCRYPT_TAG}" -b "${LETSENCRYPT_TAG}" )
-
-git clone --quiet https://git.arvados.org/arvados-formula.git ${F_DIR}/arvados
+test -d docker && ( cd docker && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/docker-formula.git ${F_DIR}/docker
+( cd docker && git checkout --quiet tags/"${DOCKER_TAG}" )
+
+echo "...locale"
+test -d locale && ( cd locale && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/locale-formula.git ${F_DIR}/locale
+( cd locale && git checkout --quiet tags/"${LOCALE_TAG}" )
+
+echo "...nginx"
+test -d nginx && ( cd nginx && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/nginx-formula.git ${F_DIR}/nginx
+( cd nginx && git checkout --quiet tags/"${NGINX_TAG}" )
+
+echo "...postgres"
+test -d postgres && ( cd postgres && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/postgres-formula.git ${F_DIR}/postgres
+( cd postgres && git checkout --quiet tags/"${POSTGRES_TAG}" )
+
+echo "...letsencrypt"
+test -d letsencrypt && ( cd letsencrypt && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/letsencrypt-formula.git ${F_DIR}/letsencrypt
+( cd letsencrypt && git checkout --quiet tags/"${LETSENCRYPT_TAG}" )
+
+echo "...logrotate"
+test -d logrotate && ( cd logrotate && git fetch ) \
+ || git clone --quiet https://github.com/saltstack-formulas/logrotate-formula.git ${F_DIR}/logrotate
+( cd logrotate && git checkout --quiet tags/"${LOGROTATE_TAG}" )
+
+echo "...arvados"
+test -d arvados || git clone --quiet https://git.arvados.org/arvados-formula.git ${F_DIR}/arvados