Hack around broken :Gcommit with symlinked .git

plugin/fugitive.vim

@@ -779,7 +779,8 @@ function! s:Commit(args) abort
   let outfile = tempname()
   let errorfile = tempname()
   try
-    execute cd.'`=s:repo().tree()`'
+    try
+      execute cd.s:fnameescape(s:repo().tree())
       if &shell =~# 'cmd'
         let command = ''
         let old_editor = $GIT_EDITOR
@@ -795,6 +796,9 @@ function! s:Commit(args) abort
       else
         silent execute '!'.command.' > '.outfile.' 2> '.errorfile
       endif
+    finally
+      execute cd.'`=dir`'
+    endtry
     if !has('gui_running')
       redraw!
     endif
@@ -827,7 +831,7 @@ function! s:Commit(args) abort
           execute 'keepalt split '.s:fnameescape(msgfile)
         endif
         let b:fugitive_commit_arguments = args
-        setlocal bufhidden=delete filetype=gitcommit
+        setlocal bufhidden=wipe filetype=gitcommit
         return '1'
       elseif error ==# '!'
         return s:Status()
@@ -843,7 +847,6 @@ function! s:Commit(args) abort
     endif
     call delete(outfile)
     call delete(errorfile)
-    execute cd.'`=dir`'
     call fugitive#reload_status()
   endtry
 endfunction