add prechangegroup and pretxnchangegroup hooks.
prechangegroup lets you stop push, pull or unbundle before it begins.
pretxnchangegroup lets you inspect changegroup before transaction is
committed, and roll back if you not like it.
pulling from ../test1
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
(run 'hg update' to get a working copy)
pulling from ../test2
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
(run 'hg update' to get a working copy)
changeset: 2:3ef543305655
tag: tip
parent: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: chmod +x a
changeset: 1:c6ecefc45368
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: a updated
changeset: 2:3ef543305655
tag: tip
parent: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: chmod +x a
changeset: 1:c6ecefc45368
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: a updated
changeset: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: added a b
resolving manifests
merging a
resolving a
-rwxr-x---
-rwxr-x---