diff -r 14e1d18d2a2a -r 8cf31b4d5fcb hgpoll.py
--- a/hgpoll.py	Sun Nov 30 03:55:47 2014 +0200
+++ b/hgpoll.py	Sun Nov 30 17:27:09 2014 +0200
@@ -278,6 +278,9 @@
 	process_new_commits (repo_name, commit_data)
 
 def process_new_commits (repo_name, commit_data):
+	if len (commit_data) == 0:
+		return
+
 	usestable = repo_name == 'zandronum-stable'
 	usesandbox = repo_name == 'zandronum-sandbox' or repo_name == 'zandronum-sandbox-stable'
 	repo_owner = 'Torr_Samaho' if not usesandbox else 'crimsondusk'
@@ -286,38 +289,46 @@
 	zanrepo = hgapi.Repo (repo_name)
 	Irc.broadcast ('%d new commits on %s' % (len (commit_data), repo_name))
 
-	if len (commit_data) > 0:
-		pull_args = [];
+	# Drop commits that we already have
+	i = 0
+	while i < len (commit_data):
+		try:
+			zanrepo.hg_command ('log', '-r' commit_data[i][0])
+			del commit_data[i]
+		except:
+			i += 1
 
-		for commit in commit_data:
-			pull_args.append ('-r');
-			pull_args.append (commit[0]);
-
-		print 'Pulling new commits...'
-		try:
-			zanrepo.hg_command ('pull', *pull_args)
+	pull_args = [];
 
-			# Also pull these commits to the zandronum main repository
-			if usestable:
-				devrepo = hgapi.Repo ('zandronum')
-				devrepo.hg_command ('pull', '../zandronum-stable', *pull_args)
+	for commit in commit_data:
+		pull_args.append ('-r');
+		pull_args.append (commit[0]);
+
+	print 'Pulling new commits...'
+	try:
+		zanrepo.hg_command ('pull', *pull_args)
 
-			# Pull everything into sandboxes too
-			if not usesandbox:
-				devrepo = hgapi.Repo ('zandronum-sandbox')
-				devrepo.hg_command ('pull', '../%s' % repo_name, *pull_args)
-
-				devrepo = hgapi.Repo ('zandronum-sandbox-stable')
-				devrepo.hg_command ('pull', '../%s' % repo_name, *pull_args)
-
-			devrepo = hgapi.Repo ('zandronum-everything')
+		# Also pull these commits to the zandronum main repository
+		if usestable:
+			devrepo = hgapi.Repo ('zandronum')
+			devrepo.hg_command ('pull', '../zandronum-stable', *pull_args)
+		# Pull everything into sandboxes too
+		if not usesandbox:
+			devrepo = hgapi.Repo ('zandronum-sandbox')
 			devrepo.hg_command ('pull', '../%s' % repo_name, *pull_args)
 
-			global g_needCommitsTxtRebuild
-			g_needCommitsTxtRebuild = True
-		except Exception as e:
-			Irc.broadcast ('Warning: unable to pull: %s' % `e`)
-			return
+			devrepo = hgapi.Repo ('zandronum-sandbox-stable')
+			devrepo.hg_command ('pull', '../%s' % repo_name, *pull_args)
+
+		devrepo = hgapi.Repo ('zandronum-everything')
+		devrepo.hg_command ('pull', '../%s' % repo_name, *pull_args)
+
+		global g_needCommitsTxtRebuild
+		g_needCommitsTxtRebuild = True
+
+	except Exception as e:
+		Irc.broadcast ('Warning: unable to pull: %s' % `e`)
+		return
 
 	for commit in commit_data:
 		commit_node = commit[0]