diff --git a/maintainers/scripts/copy-tarballs.pl b/maintainers/scripts/copy-tarballs.pl
index 6a08eb88bf84..c81b49bfb599 100755
--- a/maintainers/scripts/copy-tarballs.pl
+++ b/maintainers/scripts/copy-tarballs.pl
@@ -164,6 +164,7 @@ elsif (defined $expr) {
         my $algo = $fetch->{type};
         my $hash = $fetch->{hash};
         my $name = $fetch->{name};
+        my $isPatch = $fetch->{isPatch};
 
         if ($hash =~ /^([a-z0-9]+)-([A-Za-z0-9+\/=]+)$/) {
             $algo = $1;
@@ -189,6 +190,11 @@ elsif (defined $expr) {
             next;
         }
 
+        if ($isPatch) {
+            print STDERR "skipping $url (support for patches is missing)\n";
+            next;
+        }
+
         next if defined $exclude && $url =~ /$exclude/;
 
         if (alreadyMirrored($algo, $hash)) {
diff --git a/maintainers/scripts/find-tarballs.nix b/maintainers/scripts/find-tarballs.nix
index 990185bbb3bc..685a33d137ce 100644
--- a/maintainers/scripts/find-tarballs.nix
+++ b/maintainers/scripts/find-tarballs.nix
@@ -14,12 +14,12 @@ let
     operator = const [ ];
   });
 
-  urls = map (drv: { url = head (drv.urls or [ drv.url ]); hash = drv.outputHash; type = drv.outputHashAlgo; name = drv.name; }) fetchurlDependencies;
+  urls = map (drv: { url = head (drv.urls or [ drv.url ]); hash = drv.outputHash; isPatch = (drv?postFetch && drv.postFetch != ""); type = drv.outputHashAlgo; name = drv.name; }) fetchurlDependencies;
 
   fetchurlDependencies =
     filter
       (drv: drv.outputHash or "" != "" && drv.outputHashMode or "flat" == "flat"
-          && drv.postFetch or "" == "" && (drv ? url || drv ? urls))
+          && (drv ? url || drv ? urls))
       dependencies;
 
   dependencies = map (x: x.value) (genericClosure {