--- a/hgext/largefiles/overrides.py	Thu Apr 02 23:32:28 2015 +0900
+++ b/hgext/largefiles/overrides.py	Thu Apr 02 23:28:16 2015 +0900
@@ -1359,8 +1359,7 @@
     m.visitdir = lfvisitdirfn
 
     for f in ctx.walk(m):
-        with cmdutil.makefileobj(repo, opts.get('output'), ctx.node(),
-                                 pathname=f) as fp:
+        with cmdutil.makefileobj(ctx, opts.get('output'), pathname=f) as fp:
             lf = lfutil.splitstandin(f)
             if lf is None or origmatchfn(f):
                 # duplicating unreachable code from commands.cat

--- a/mercurial/cmdutil.py	Thu Apr 02 23:32:28 2015 +0900
+++ b/mercurial/cmdutil.py	Thu Apr 02 23:28:16 2015 +0900
@@ -956,19 +956,19 @@
     def __exit__(self, exc_type, exc_value, exc_tb):
         pass
 
-def makefileobj(repo, pat, node, desc=None, total=None,
+def makefileobj(ctx, pat, desc=None, total=None,
                 seqno=None, revwidth=None, mode='wb', modemap=None,
                 pathname=None):
 
     writable = mode not in ('r', 'rb')
 
     if isstdiofilename(pat):
+        repo = ctx.repo()
         if writable:
             fp = repo.ui.fout
         else:
             fp = repo.ui.fin
         return _unclosablefile(fp)
-    ctx = repo[node]
     fn = makefilename(ctx, pat, desc, total, seqno, revwidth, pathname)
     if modemap is not None:
         mode = modemap.get(fn, mode)
@@ -1546,7 +1546,7 @@
         if not fp and fntemplate:
             desc_lines = ctx.description().rstrip().split('\n')
             desc = desc_lines[0]    #Commit always has a first line.
-            fo = makefileobj(repo, fntemplate, ctx.node(), desc=desc,
+            fo = makefileobj(ctx, fntemplate, desc=desc,
                              total=total, seqno=seqno, revwidth=revwidth,
                              mode='wb', modemap=filemode)
             dest = fo.name

--- a/mercurial/commands.py	Thu Apr 02 23:32:28 2015 +0900
+++ b/mercurial/commands.py	Thu Apr 02 23:28:16 2015 +0900
@@ -486,7 +486,7 @@
     if dest == '-':
         if kind == 'files':
             raise error.Abort(_('cannot archive plain files to stdout'))
-        dest = cmdutil.makefileobj(repo, dest, node)
+        dest = cmdutil.makefileobj(ctx, dest)
         if not prefix:
             prefix = os.path.basename(repo.root) + '-%h'
 

--- a/mercurial/subrepo.py	Thu Apr 02 23:32:28 2015 +0900
+++ b/mercurial/subrepo.py	Thu Apr 02 23:28:16 2015 +0900
@@ -1642,8 +1642,7 @@
         # TODO: add support for non-plain formatter (see cmdutil.cat())
         for f in match.files():
             output = self._gitcommand(["show", "%s:%s" % (rev, f)])
-            fp = cmdutil.makefileobj(self._subparent, fntemplate,
-                                     self._ctx.node(),
+            fp = cmdutil.makefileobj(self._ctx, fntemplate,
                                      pathname=self.wvfs.reljoin(prefix, f))
             fp.write(output)
             fp.close()