rclone: use tag in version output to match upstream pre build binaries

Before it was missing a `v`, which caused minor problems with fish shell
https://github.com/fish-shell/fish-shell/commit/cc8fa0f7808130ece03f1c2ac0c95f9ede2aaa1d.

pkgs/applications/networking/sync/rclone/default.nix

@@ -25,7 +25,7 @@ buildGoModule rec {
   src = fetchFromGitHub {
     owner = "rclone";
     repo = "rclone";
-    rev = "v${version}";
+    tag = "v${version}";
     hash = "sha256-3Al58jg+pYP46VbpIRbYBhMOG6m7OQaC0pxKawX12E8=";
   };
 
@@ -47,7 +47,7 @@ buildGoModule rec {
   ldflags = [
     "-s"
     "-w"
-    "-X github.com/rclone/rclone/fs.Version=${version}"
+    "-X github.com/rclone/rclone/fs.Version=${src.tag}"
   ];
 
   postConfigure = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''