我正在试验git-annex，我想我一定做错了。我在机器上安装了git-annex。然后我做了以下
$ mkdir annex
$ cd annex/
$ git init
Initialized empty Git repository in /annex/.git/
$ git annex init "test data"
init test data ok
(Recording state in git...)
$ git annex add --backend=SHA1 .
$ git commit -am "initial repo"
On branch master
Initial commit
nothing to commit
$ touch test.txt # test.txt has a line "this is a test"
$ git annex add .
add test.txt
此时，我的命令行挂起 - git附件添加。似乎无法完成。有谁知道什么可能是错的？