diff --git a/mercurial/changelog.py b/mercurial/changelog.py
--- a/mercurial/changelog.py
+++ b/mercurial/changelog.py
@@ -267,6 +267,8 @@ class changelog(revlog.revlog):
         self.checkinlinesize(tr)
 
     def readpending(self, file):
+        if not self.opener.exists(file):
+            return # no pending data for changelog
         r = revlog.revlog(self.opener, file)
         self.index = r.index
         self.nodemap = r.nodemap
diff --git a/tests/test-bundle2-exchange.t b/tests/test-bundle2-exchange.t
--- a/tests/test-bundle2-exchange.t
+++ b/tests/test-bundle2-exchange.t
@@ -72,7 +72,7 @@ Add more obsolescence information
 clone --pull
 
   $ hg -R main phase --public cd010b8cd998
-  pre-close-tip:000000000000 public 
+  pre-close-tip:02de42196ebe draft 
   postclose-tip:02de42196ebe draft 
   txnclose hook: HG_PHASES_MOVED=1 HG_TXNID=TXN:* HG_TXNNAME=phase (glob)
   $ hg clone main other --pull --rev 9520eea781bc
@@ -98,7 +98,7 @@ clone --pull
 pull
 
   $ hg -R main phase --public 9520eea781bc
-  pre-close-tip:000000000000 public 
+  pre-close-tip:02de42196ebe draft 
   postclose-tip:02de42196ebe draft 
   txnclose hook: HG_PHASES_MOVED=1 HG_TXNID=TXN:* HG_TXNNAME=phase (glob)
   $ hg -R other pull -r 24b6387c8c8c
@@ -128,13 +128,13 @@ pull
 pull empty (with phase movement)
 
   $ hg -R main phase --public 24b6387c8c8c
-  pre-close-tip:000000000000 public 
+  pre-close-tip:02de42196ebe draft 
   postclose-tip:02de42196ebe draft 
   txnclose hook: HG_PHASES_MOVED=1 HG_TXNID=TXN:* HG_TXNNAME=phase (glob)
   $ hg -R other pull -r 24b6387c8c8c
   pulling from $TESTTMP/main (glob)
   no changes found
-  pre-close-tip:000000000000 public 
+  pre-close-tip:24b6387c8c8c public 
   postclose-tip:24b6387c8c8c public 
   txnclose hook: HG_NEW_OBSMARKERS=0 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:* HG_TXNNAME=pull (glob)
   file:/*/$TESTTMP/main HG_URL=file:$TESTTMP/main (glob)
@@ -204,7 +204,7 @@ add extra data to test their exchange du
   $ hg -R other bookmark --rev cd010b8cd998 book_32af
 
   $ hg -R main phase --public eea13746799a
-  pre-close-tip:000000000000 public 
+  pre-close-tip:02de42196ebe draft book_02de
   postclose-tip:02de42196ebe draft book_02de
   txnclose hook: HG_PHASES_MOVED=1 HG_TXNID=TXN:* HG_TXNNAME=phase (glob)
 
@@ -344,7 +344,7 @@ push over http
   $ cat other.pid >> $DAEMON_PIDS
 
   $ hg -R main phase --public 32af7686d403
-  pre-close-tip:000000000000 public 
+  pre-close-tip:02de42196ebe draft book_02de
   postclose-tip:02de42196ebe draft book_02de
   txnclose hook: HG_PHASES_MOVED=1 HG_TXNID=TXN:* HG_TXNNAME=phase (glob)
   $ hg -R main push http://localhost:$HGPORT2/ -r 32af7686d403 --bookmark book_32af
diff --git a/tests/test-pending.t b/tests/test-pending.t
--- a/tests/test-pending.t
+++ b/tests/test-pending.t
@@ -113,3 +113,27 @@ test external hook
   rollback completed
   abort: pretxnchangegroup hook exited with status 1
   pull 0000000000000000000000000000000000000000
+
+Test that pending on transaction without changegroup see the normal changegroup(
+(issue4609)
+
+  $ cat <<EOF > parent/.hg/hgrc
+  > [hooks]
+  > pretxnchangegroup=
+  > pretxnclose = hg tip -T 'tip: {node|short}\n'
+  > [phases]
+  > publishing=False
+  > EOF
+
+setup
+
+  $ cd parent
+  $ echo a > a
+  $ hg add a
+  $ hg commit -m a
+  tip: cb9a9f314b8b
+
+actual test
+
+  $ hg phase --public .
+  tip: cb9a9f314b8b