diff --git a/modules/git/repo_tree_nogogit.go b/modules/git/repo_tree_nogogit.go
index 20c92a79ed9b1..3e20fc4f32d4d 100644
--- a/modules/git/repo_tree_nogogit.go
+++ b/modules/git/repo_tree_nogogit.go
@@ -58,6 +58,10 @@ func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
 		tree.entriesParsed = true
 		return tree, nil
 	default:
+		_, err := rd.Discard(int(size))
+		if err != nil {
+			return nil, err
+		}
 		return nil, ErrNotExist{
 			ID: id.String(),
 		}