fix issue with global var

pget.py

@@ -64,16 +64,18 @@ def make_manifest(manifest_filename: str = 'manifest.pget'):
     # Step 4: Copy files to cache
     if CACHE_URI.startswith('s3://'):
         cp_command = ['aws', 's3', 'cp']
+        bucket = CACHE_URI
     elif CACHE_URI.startswith('r2://'):
         cp_command = ['aws', 's3', 'cp', '--endpoint-url', 'https://3309f63723c6de8a36dab1a22068e3aa.r2.cloudflarestorage.com']
-        CACHE_URI = "s3://" + CACHE_URI[5:]
+        bucket = "s3://" + CACHE_URI[5:]
     elif CACHE_URI.startswith('gs://'):
         cp_command = ['gcloud', 'storage', 'cp']
+        bucket = CACHE_URI
     else:
         raise ValueError("Invalid CACHE_URI. Must start with 's3://' or 'gs://'")
 
     for filepath, _ in tqdm(large_files, desc="Copying files to cache"):
-        dest_path = os.path.join(CACHE_URI, filepath.lstrip('./'))
+        dest_path = os.path.join(bucket, filepath.lstrip('./'))
         subprocess.run(cp_command + [filepath, dest_path], check=True)
 
     # Step 5: Generate manifest file