neovim: add autocmd for fugitive buffer

neovim/.config/nvim/after/plugin/autocmds.lua

@@ -7,3 +7,20 @@ vim.api.nvim_create_autocmd("TextYankPost", {
     vim.highlight.on_yank({ timeout = 200 })
   end,
 })
+
+vim.api.nvim_create_autocmd("BufWinEnter", {
+  pattern = "*",
+  group = group,
+  callback = function()
+    if vim.bo.ft ~= "fugitive" then
+      return
+    end
+
+    local bufnr = vim.api.nvim_get_current_buf()
+    local opts = {
+      buffer = bufnr,
+    }
+
+    vim.keymap.set("n", "p", ":Git push<CR>", opts)
+  end,
+})