--- a/mercurial/streamclone.py	Fri Mar 11 20:34:49 2016 -0500
+++ b/mercurial/streamclone.py	Tue Mar 15 14:10:46 2016 -0700
@@ -206,7 +206,8 @@
                 # partially encode name over the wire for backwards compat
                 yield '%s\0%d\n' % (store.encodedir(name), size)
                 if size <= 65536:
-                    yield svfs.read(name)
+                    with svfs(name, 'rb') as fp:
+                        yield fp.read(size)
                 else:
                     for chunk in util.filechunkiter(svfs(name), limit=size):
                         yield chunk