diff --git a/ci.nix b/ci.nix
index f658ba4..aa21afa 100644
--- a/ci.nix
+++ b/ci.nix
@@ -28,7 +28,6 @@ stdenv.mkDerivation {
   NIXPKGS="${nixpkgs}";
 
   checkPhase = ''
-    git config --file $NIXPKGS/.git/config features.manyFiles true
     mkdir $out
     patchShebangs .
     cat tests/head_nixpkgs.bats tests/repo.bash > tests/ephemeral.bats