p4est-sc-dbg unstable-2021-06-14 -> 2.8.5 https://github.com/cburstedde/libsc/releases
attrpath: p4est-sc-dbg
Checking auto update branch...
No auto update branch exists
[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript
Diff after rewrites:
diff --git a/pkgs/development/libraries/science/math/p4est-sc/default.nix b/pkgs/development/libraries/science/math/p4est-sc/default.nix
index bb5d212061f2..c5c51db1a130 100644
--- a/pkgs/development/libraries/science/math/p4est-sc/default.nix
+++ b/pkgs/development/libraries/science/math/p4est-sc/default.nix
@@ -12,14 +12,14 @@ let
 in
 stdenv.mkDerivation {
   pname = "p4est-sc${dbg}";
-  version = "unstable-2021-06-14";
+  version = "2.8.5";
 
   # fetch an untagged snapshot of the prev3-develop branch
   src = fetchFromGitHub {
     owner = "cburstedde";
     repo = "libsc";
     rev = "1ae814e3fb1cc5456652e0d77550386842cb9bfb";
-    sha256 = "14vm0b162jh8399pgpsikbwq4z5lkrw9vfzy3drqykw09n6nc53z";
+    sha256 = "sha256-fxRmjU2AT49zG/67nXietHyC+ZpR33dTGghKYcICdZM=";
   };
 
   strictDeps = true;

Source url did not change.