This issue is already fixed on devenv_3752, but still reproduce on ose 1.2/2013-09-05.1 puddle

+++ This bug was initially created as a clone of Bug #969995 +++

Description of preblem:
When we have added channel "channel://pear.php.net/Validate-0.8.4" to a php app, then the second time git push will be failed with 'gear postreceive' .

Version-Release number of selected component (if applicable):
devenv_3307
STG(devenv-stage_356)

How reproducible:
aways

Steps to reproduce:
1. Create a php app
# rhc app create php php-5.3 -predhat
2.Write channel to file 'deplist.txt'
# echo 'channel://pear.php.net/Validate-0.8.4' > deplist.txt
3. git push it 
# git commit -am "added channel" ; git push
4. Create new file to this repo and git push
# touch test; git add test; git commit -am "Added new file";git push
Actual results:
...
remote: PHP Stack trace:
remote: PHP   1. {main}() /usr/share/pear/pearcmd.php:0
remote: PHP   2. PEAR_Command_Common->run() /usr/share/pear/pearcmd.php:305
remote: PHP   3. PEAR_Command_Registry->doList() /usr/share/pear/PEAR/Command/Common.php:271
remote: PHP   4. PEAR_Command_Registry->doFileList() /usr/share/pear/PEAR/Command/Registry.php:146
remote: PHP   5. file_exists() /usr/share/pear/PEAR/Command/Registry.php:255
remote: pear/Validate is already installed and is the same as the released version 0.8.4
remote: upgrade failed
remote: An error occurred executing 'gear postreceive'
remote: 
remote: For more details about the problem, try running the command again with the '--trace' option.
To ssh://51ac44796088672b29000001@php1-sun000.osetestv2auto.com/~/git/php1.git/
   5c52c9a..ead0d9e  master -> master

Expect results:
Successed

Additional info:

--- Additional comment from xiaoli on 2013-06-03 05:49:52 EDT ---

This error only happens if trying to install the  package which is already installed.