Fix back bootstrapping and healthcheck for fresh install with no packages to fetch.

lua/lazy/init.lua

@@ -96,14 +96,11 @@ end
 function M.bootstrap()
   local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
   if not vim.loop.fs_stat(lazypath) then
-    vim.fn.system({
-      "git",
-      "clone",
-      "--filter=blob:none",
+    vim.fn.system({ "git", "clone",
+      "--filter=blob:none", "--depth=1",
       "https://github.com/folke/lazy.nvim.git",
-      "--branch=stable", -- latest stable release
-      lazypath,
-    })
+      lazypath })
+    vim.fn.system({ "git", "-C", lazypath, "checkout", "tags/stable" }) -- last stable release
   end
   vim.opt.rtp:prepend(lazypath)
 end