diff --git a/scripts/Arch/OS/setup.fish b/scripts/Arch/OS/setup.fish
index 69a9057d..7ca81d2f 100755
--- a/scripts/Arch/OS/setup.fish
+++ b/scripts/Arch/OS/setup.fish
@@ -125,5 +125,7 @@ begin
         end
     end
 
+    source "$dir/../../lib/nix.fish"
+    git -C "$nixPkgsDir" reset --hard
     runSetup
 end