diff -r 63a57a2727b6 -r 451df92cec49 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Sun May 17 22:42:47 2015 -0400
+++ b/mercurial/localrepo.py	Wed May 20 15:29:32 2015 -0500
@@ -974,7 +974,7 @@
             """will run pre-closing hooks"""
             pending = lambda: tr.writepending() and self.root or ""
             reporef().hook('pretxnclose', throw=True, pending=pending,
-                           xnname=desc, **tr.hookargs)
+                           txnname=desc, **tr.hookargs)
 
         tr = transaction.transaction(rp, self.sopener, vfsmap,
                                      "journal",
@@ -984,7 +984,7 @@
                                      validator=validate)
 
         trid = 'TXN:' + util.sha1("%s#%f" % (id(tr), time.time())).hexdigest()
-        tr.hookargs['TXNID'] = trid
+        tr.hookargs['txnid'] = trid
         # note: writing the fncache only during finalize mean that the file is
         # outdated when running hooks. As fncache is used for streaming clone,
         # this is not expected to break anything that happen during the hooks.