diff --git a/runtime/lua/vim/pack.lua b/runtime/lua/vim/pack.lua
index de3a64c325..2962c994f7 100644
--- a/runtime/lua/vim/pack.lua
+++ b/runtime/lua/vim/pack.lua
@@ -107,7 +107,9 @@ local M = {}
 local function git_cmd(cmd, cwd)
   -- Use '-c gc.auto=0' to disable `stderr` "Auto packing..." messages
   cmd = vim.list_extend({ 'git', '-c', 'gc.auto=0' }, cmd)
-  local sys_opts = { cwd = cwd, text = true, clear_env = true }
+  local env = vim.fn.environ() --- @type table<string,string>
+  env.GIT_DIR, env.GIT_WORK_TREE = nil, nil
+  local sys_opts = { cwd = cwd, text = true, env = env, clear_env = true }
   local out = async.await(3, vim.system, cmd, sys_opts) --- @type vim.SystemCompleted
   async.await(1, vim.schedule)
   if out.code ~= 0 then
diff --git a/test/functional/plugin/pack_spec.lua b/test/functional/plugin/pack_spec.lua
index a8664b80b9..bbd9ada85a 100644
--- a/test/functional/plugin/pack_spec.lua
+++ b/test/functional/plugin/pack_spec.lua
@@ -664,6 +664,19 @@ describe('vim.pack', function()
       eq('basic main', exec_lua('return require("basic")'))
     end)
 
+    it('is not affected by special environment variables', function()
+      fn.setenv('GIT_WORK_TREE', fn.getcwd())
+      fn.setenv('GIT_DIR', vim.fs.joinpath(fn.getcwd(), '.git'))
+      local ref_environ = fn.environ()
+
+      exec_lua(function()
+        vim.pack.add({ repos_src.basic })
+      end)
+      eq('basic main', exec_lua('return require("basic")'))
+
+      eq(ref_environ, fn.environ())
+    end)
+
     it('validates input', function()
       local validate = function(err_pat, input)
         local add_input = function()
@@ -1163,6 +1176,20 @@ describe('vim.pack', function()
       eq({ 'return "fetch new 2"' }, fn.readfile(fetch_lua_file))
     end)
 
+    it('is not affected by special environment variables', function()
+      fn.setenv('GIT_WORK_TREE', fn.getcwd())
+      fn.setenv('GIT_DIR', vim.fs.joinpath(fn.getcwd(), '.git'))
+      local ref_environ = fn.environ()
+
+      exec_lua(function()
+        vim.pack.add({ repos_src.fetch })
+        vim.pack.update({ 'fetch' }, { force = true })
+      end)
+      eq({ 'return "fetch new 2"' }, fn.readfile(fetch_lua_file))
+
+      eq(ref_environ, fn.environ())
+    end)
+
     it('validates input', function()
       local validate = function(err_pat, input)
         local update_input = function()