diff --git a/rewrite/scripts/package.sh b/rewrite/scripts/package.sh
index d1a03f8..17ffde8 100755
--- a/rewrite/scripts/package.sh
+++ b/rewrite/scripts/package.sh
@@ -29,12 +29,13 @@ if [ "$prerequisites" == "--prep" ]; then
     chown -R root:root /root/.ssh
     chmod 600 /root/.ssh/id_ed25519
     ssh-keyscan -H gitea.detee.cloud > ~/.ssh/known_hosts
+
+    echo "Building the occlum fork"
+    git clone git@gitea.detee.cloud:SGX/occlum.git
+    (cd occlum && make submodule)
+    (cd tools/toolchains/utils_lib && ./build.sh)
 fi
 
-echo "Building the occlum fork"
-git clone git@gitea.detee.cloud:SGX/occlum.git
-(cd occlum && make submodule)
-(cd tools/toolchains/utils_lib && ./build.sh)
 
 echo "Building the hacker-challenge signed bundle"
 occlum-cargo build --release
@@ -52,7 +53,7 @@ targets:
     copy:
       - files:
         - /opt/occlum/toolchains/dcap_lib/musl/libocclum_dcap.so.0.1.0
-        - /opt/occlum/toolchains/utils_lib/musl/libutils_dcap.so.0.1.0
+        - /opt/occlum/toolchains/utils_lib/musl/libocclum_utils.so.0.1.0
 EOF
 
 rm -rf challenge_instance && mkdir challenge_instance && cd challenge_instance