错误：无法打开.git / FETCH_HEAD：使用php脚本进行git pull时权限被拒绝

Question

I mad simple php script for git pull

<?php
$output = shell_exec("cd /var/www/domain.tld/html/test/ && git pull 2>&1");
echo "<pre>$output</pre>";

named it git.php and gave it 755

the output was

error: cannot open .git/FETCH_HEAD: Permission denied

but when try from the terminal

$ git pull
Already up-to-date.

i checked the directories ownership , my user is "savvy"

drwxrwsr-x  4 savvy savvy     4096 Jul 13 05:40 test

and the files inside

$ ls -la test/
total 20
drwxrwsr-x 4 savvy savvy 4096 Jul 13 05:40 .
drwxr-xr-x 7 savvy savvy 4096 Jul 13 05:38 ..
drwxrwsr-x 8 savvy savvy 4096 Jul 13 05:41 .git
-rw-rwSr-- 1 savvy savvy   19 Jul 13 05:39 test.php

.git

$ ls -la .git/
total 60
drwxrwsr-x 8 savvy savvy 4096 Jul 13 05:41 .
drwxrwsr-x 4 savvy savvy 4096 Jul 13 05:40 ..
drwxrwsr-x 2 savvy savvy 4096 Jul 13 05:39 branches
-rw-rwSr-- 1 savvy savvy  268 Jul 13 05:39 config
-rw-rwSr-- 1 savvy savvy   73 Jul 13 05:39 description
-rw-rwSr-- 1 savvy savvy   97 Jul 13 05:41 FETCH_HEAD
-rw-rwSr-- 1 savvy savvy   23 Jul 13 05:39 HEAD
drwxrwsr-x 2 savvy savvy 4096 Jul 13 05:39 hooks
-rw-rwSr-- 1 savvy savvy  104 Jul 13 05:41 index
drwxrwsr-x 2 savvy savvy 4096 Jul 13 05:39 info
drwxrwsr-x 3 savvy savvy 4096 Jul 13 05:39 logs
drwxrwsr-x 4 savvy savvy 4096 Jul 13 05:39 objects
-rw-rwSr-- 1 savvy savvy   41 Jul 13 05:40 ORIG_HEAD
-rw-rwSr-- 1 savvy savvy  107 Jul 13 05:39 packed-refs
drwxrwsr-x 5 savvy savvy 4096 Jul 13 05:39 refs

~/.ssh

drwx------ 2 savvy savvy 4096 Jul 13 04:56 .ssh

inside

$ ls -la .ssh/
total 36
drwx------ 2 savvy savvy 4096 Jul 13 04:56 .
drwxr-xr-x 4 savvy savvy 4096 Jul 12 08:34 ..
-rw-r--r-- 1 savvy savvy  398 Jul 12 05:46 authorized_keys
-rw-rw-r-- 1 savvy savvy   59 Jul 11 10:10 config
-rw------- 1 savvy savvy 1679 Jul 11 07:44 id_rsa
-rw-rw-r-- 1 savvy savvy  398 Jul 12 05:21 id_rsa.pub
-rw-r--r-- 1 savvy savvy 1768 Jul 13 05:08 known_hosts

Answer 1

I solve this problem by the following

1- copy /home/savvy/.ssh to /var/www/

# cp -R /home/savvy/.ssh /var/www/

2- gave the /var/www diractory to www-data user

# chown -R www-data:www-data /var/www/

3- login as www-data user

$ su
Password: 
# su -s /bin/bash www-data

4- clone the repo into my directory /var/www/domain.tld/html/test/

5- call the git.php file i made already domain.tld/git.php
result

From bitbucket.org:repo/test
8e9f67c..185cd9e  master     -> origin/master
Updating 8e9f67c..185cd9e
Fast-forward
test.php | 1 +
1 file changed, 1 insertion(+)