diff --git a/packages/react-native-codegen/scripts/oss/build.sh b/packages/react-native-codegen/scripts/oss/build.sh
index 7092fdf1aa739d..5c61570af7ca4f 100755
--- a/packages/react-native-codegen/scripts/oss/build.sh
+++ b/packages/react-native-codegen/scripts/oss/build.sh
@@ -11,9 +11,18 @@ THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOUR
 set -e
 set -u
 
-pushd "$THIS_DIR/../.." >/dev/null
+TMP_DIR=$(mktemp -d)
+CODEGEN_DIR="$THIS_DIR/../.."
+
+rm -rf "$CODEGEN_DIR/lib" "$CODEGEN_DIR/node_modules"
+
+cp -R "$CODEGEN_DIR/." "$TMP_DIR"
+
+pushd "$TMP_DIR" >/dev/null
 
 yarn install 2> >(grep -v '^warning' 1>&2)
-yarn run build
 
 popd >/dev/null
+
+mv "$TMP_DIR/lib" "$TMP_DIR/node_modules" "$CODEGEN_DIR"
+rm -rf "$TMP_DIR"