diff --git a/src/calibre/devices/mtp/unix/upstream/update.py b/src/calibre/devices/mtp/unix/upstream/update.py
old mode 100644
new mode 100755
index 0fc6a2b41c..98edf95812
--- a/src/calibre/devices/mtp/unix/upstream/update.py
+++ b/src/calibre/devices/mtp/unix/upstream/update.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 # vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:fdm=marker:ai
 from __future__ import (unicode_literals, division, absolute_import,
                         print_function)
@@ -14,9 +14,7 @@ base = os.path.dirname(os.path.abspath(__file__))
 os.chdir('/tmp')
 if os.path.exists('libmtp'):
     shutil.rmtree('libmtp')
-subprocess.check_call(['git', 'clone', 'git://git.code.sf.net/p/libmtp/code',
+subprocess.check_call(['git', 'clone', '--depth=1', 'git://git.code.sf.net/p/libmtp/code',
                        'libmtp'])
 for x in ('src/music-players.h', 'src/device-flags.h'):
-    with open(os.path.join(base, os.path.basename(x)), 'wb') as f:
-        shutil.copyfileobj(open('libmtp/'+x), f)
-
+    shutil.copyfile('libmtp/'+x, os.path.join(base, os.path.basename(x)))