diff --git a/pkgs/build-support/fetchgit/default.nix b/pkgs/build-support/fetchgit/default.nix
index 66bb3b7..83811e8 100644
--- a/pkgs/build-support/fetchgit/default.nix
+++ b/pkgs/build-support/fetchgit/default.nix
@@ -27,6 +27,7 @@ lib.makeOverridable (
 , # Impure env vars (https://nixos.org/nix/manual/#sec-advanced-attributes)
   # needed for netrcPhase
   netrcImpureEnvVars ? []
+, passthru ? {}
 , meta ? {}
 , allowedRequisites ? null
 }:
@@ -103,7 +104,7 @@ stdenvNoCC.mkDerivation {
 
   inherit preferLocalBuild meta allowedRequisites;
 
-  passthru = {
+  passthru = passthru // {
     gitRepoUrl = url;
   };
 }
diff --git a/pkgs/build-support/fetchgithub/default.nix b/pkgs/build-support/fetchgithub/default.nix
index 4ce3c6e..66da4d6 100644
--- a/pkgs/build-support/fetchgithub/default.nix
+++ b/pkgs/build-support/fetchgithub/default.nix
@@ -1,22 +1,30 @@
 { lib, fetchgit, fetchzip }:
 
 lib.makeOverridable (
-{ owner, repo, rev, name ? "source"
+{ owner, repo, rev
+, name ? null # Override with null to use the default value
+, pname ? "source-${githubBase}-${owner}-${repo}"
 , fetchSubmodules ? false, leaveDotGit ? null
 , deepClone ? false, private ? false, forceFetchGit ? false
 , sparseCheckout ? []
 , githubBase ? "github.com", varPrefix ? null
+, passthru ? { }
 , meta ? { }
 , ... # For hash agility
 }@args:
 
 let
+  name = if args.name or null != null then args.name
+  else "${pname}-${rev}";
 
   position = (if args.meta.description or null != null
     then builtins.unsafeGetAttrPos "description" args.meta
     else builtins.unsafeGetAttrPos "rev" args
   );
   baseUrl = "https://${githubBase}/${owner}/${repo}";
+  newPassthru = passthru // {
+    inherit rev owner repo;
+  };
   newMeta = meta // {
     homepage = meta.homepage or baseUrl;
   } // lib.optionalAttrs (position != null) {
@@ -53,16 +61,19 @@ let
   fetcherArgs = (if useFetchGit
     then {
       inherit rev deepClone fetchSubmodules sparseCheckout; url = gitRepoUrl;
+      passthru = newPassthru;
     } // lib.optionalAttrs (leaveDotGit != null) { inherit leaveDotGit; }
     else {
       url = "${baseUrl}/archive/${rev}.tar.gz";
 
-      passthru = {
+      passthru = newPassthru // {
         inherit gitRepoUrl;
       };
     }
   ) // privateAttrs // passthruAttrs // { inherit name; };
 in
 
-fetcher fetcherArgs // { meta = newMeta; inherit rev owner repo; }
+(fetcher fetcherArgs).overrideAttrs (finalAttrs: previousAttrs: {
+  meta = newMeta;
+})
 )
diff --git a/pkgs/by-name/py/python/python-modules/build/default.nix b/pkgs/by-name/py/python/python-modules/build/default.nix
index 4eaace8..53c9b8c 100644
--- a/pkgs/by-name/py/python/python-modules/build/default.nix
+++ b/pkgs/by-name/py/python/python-modules/build/default.nix
@@ -19,7 +19,7 @@
 
 buildPythonPackage rec {
   pname = "build";
-  version = "1.2.1";
+  version = "1.1.1";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     owner = "pypa";
     repo = "build";
     rev = "refs/tags/${version}";
-    hash = "sha256-G0g+1v19sQMUuQlZKGELZOwwX07i7TIdEdaYzr8bKtI=";
+    hash = "sha256-SGWpm+AGIfqKMpDfmz2aMYmcs+XVREbHIXSuU4R7U/k=";
   };
 
   postPatch = ''