diff --git a/libcxx/src/filesystem/operations.cpp b/libcxx/src/filesystem/operations.cpp
--- a/libcxx/src/filesystem/operations.cpp
+++ b/libcxx/src/filesystem/operations.cpp
@@ -678,7 +678,7 @@
   };
 
   CopyFileState cfs;
-  if (fcopyfile(read_fd.fd, write_fd.fd, cfs.state, COPYFILE_DATA) < 0) {
+  if (fcopyfile(read_fd.fd, write_fd.fd, cfs.state, COPYFILE_CLONE) < 0) {
     ec = capture_errno();
     return false;
   }