nixpkgs/neovim: patch fugitive to show relative to origin/HEAD

.config/nixpkgs/neovim/plugins/default.nix

@@ -3,6 +3,10 @@ let
   plugins = builtins.fromJSON (builtins.readFile ./sources.json);
 
   overrides = {
+    "tpope/vim-fugitive" = {
+      patches = [ ./fugitive-origin-head.patch ];
+    };
+
     "nvim-telescope/telescope-fzf-native.nvim" = {
       dontBuild = false;
     };

.config/nixpkgs/neovim/plugins/fugitive-origin-head.patch

@@ -0,0 +1,14 @@
+diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
+index ce16048..2182c1b 100644
+--- a/autoload/fugitive.vim
++++ b/autoload/fugitive.vim
+@@ -2906,6 +2906,9 @@ function! fugitive#BufReadStatus(...) abort
+     if len(pull) && get(props, 'branch.ab') !~# ' -0$'
+       call s:AddLogSection('Unpulled from ' . pull, [head . '..' . pull])
+     endif
++    if len(push)
++      call s:AddLogSection('Pushed to ' . push, ['origin/HEAD..' . push])
++    endif
+ 
+     setlocal nomodified readonly noswapfile
+     doautocmd BufReadPost