[Windows] go-git requires privilege permission when repository contains symlink

[tyru]

C:\Users\tyru>volt get -l
[INFO] Full building C:\Users\tyru\vimfiles\pack\volt\opt directory ...
[INFO] Installing vimrc and gvimrc ...
! github.com/vim-jp/vital.vim > install failed
  * failed to install plugin: symlink test.vim C:\Users\tyru\volt\repos\github.com\vim-jp\vital.vim\test\_testdata\Vim\ScriptLocal\symlink.vim: A required privilege is not held by the client.
! github.com/w0rp/ale > install failed
  * failed to install plugin: symlink ..\..\vimrc C:\Users\tyru\volt\repos\github.com\w0rp\ale\test\.config\nvim\init.vim: A required privilege is not held by the client.

...

[ERROR] failed to install some plugins