Fix compilation

src/command_helpers.rs

@@ -327,7 +327,7 @@ pub(crate) fn objects_from_files(files: &[Arc<Path>], dst: &Path) -> Result<Vec<
         };
 
         hasher.write(dirname.as_bytes());
-        if let Some(extension) = basename.extension() {
+        if let Some(extension) = file.extension() {
             hasher.write(extension.to_string_lossy().as_bytes());
         }
         let obj = dst