diff -r e39ef1eff75a -r 9a2db13b2e99 contrib/hammerclient.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/hammerclient.py	Tue Aug 28 11:24:50 2018 +0200
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+import os
+import sys
+import subprocess
+
+if len(sys.argv) < 2:
+    execname = os.path.basename(sys.argv[0])
+    print >> sys.stderr, "usage: %s CLIENT_ID" % execname
+
+client_id = sys.argv[1]
+
+subprocess.check_call(['hg', 'branch', "--force", "hammer-branch-%s" % client_id])
+
+while True:
+    subprocess.check_call([
+        'hg', 'commit',
+        "--config", "ui.allowemptycommit=yes",
+        "--message", "hammer-%s" % client_id,
+    ])
+    nodeid = subprocess.check_output([
+        'hg', 'log', '--rev', '.', '--template', '{node}'
+    ])
+    subprocess.check_call([
+        'hg', 'debugobsolete', ''.join(reversed(nodeid)), nodeid
+    ])
+    subprocess.check_call(['hg', 'pull'])
+    subprocess.check_call(['hg', 'push', '--force'])