datalad 0 -> 1
attrpath: datalad
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/psrr3k3fvbc9b5zyyxxizajnjpnb7iaf-packages.json.drv
building '/nix/store/psrr3k3fvbc9b5zyyxxizajnjpnb7iaf-packages.json.drv'...

Going to be running update for following packages:
 - datalad-0.18.3

Press Enter key to continue...
Running update for:
 - datalad-0.18.3: UPDATING ...
 - datalad-0.18.3: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/applications/version-management/datalad/default.nix b/pkgs/applications/version-management/datalad/default.nix
index f5920d198af6..7a59bd38361a 100644
--- a/pkgs/applications/version-management/datalad/default.nix
+++ b/pkgs/applications/version-management/datalad/default.nix
@@ -2,13 +2,13 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "datalad";
-  version = "0.18.3";
+  version = "0.19.5";
 
   src = fetchFromGitHub {
     owner = "datalad";
     repo = pname;
-    rev = version;
-    hash = "sha256-vqO37o5NxQk+gHfvhM1I2ea9/q9ZaLWkDEyPYJKEPcs";
+    rev = "refs/tags/${version}";
+    hash = "sha256-pgrpnnZcpnjXroByfTKrTLRMgom2dxtCtodPGGjB6PQ=";
   };
 
   nativeBuildInputs = [ installShellFiles git ];

An auto update branch exists with message `datalad: 0.18.3 -> 0.19.5`. New version is 0.19.5.
An auto update branch exists with an equal or greater version