Don't cache cwd

autoload/sy.vim

@@ -27,7 +27,6 @@ function! sy#start() abort
   if !exists('b:sy_info')
     let b:sy_info = {
           \ 'chdir': haslocaldir() ? 'lcd' : 'cd',
-          \ 'cwd':   getcwd(),
           \ 'dir':   fnamemodify(b:sy_path, ':p:h'),
           \ 'path':  sy#util#escape(b:sy_path),
           \ 'file':  sy#util#escape(fnamemodify(b:sy_path, ':t')),

autoload/sy/repo.vim

@@ -148,10 +148,11 @@ function! s:run(cmd, path, do_switch_dir)
 
   if a:do_switch_dir
     try
+      let cwd = getcwd()
       execute b:sy_info.chdir fnameescape(b:sy_info.dir)
       let ret = system(cmd)
     finally
-      execute b:sy_info.chdir fnameescape(b:sy_info.cwd)
+      execute b:sy_info.chdir cwd
     endtry
     return ret
   endif