I have a git repository and I need to set setuid by using "chmod 6775" for one of files and then commit changes. 

But these changes do not present when I download that repository to another host. I do not see "S" or "s" sign in attributes:

```
After commit: 
-rwsrwsr-x  1 root stuff  51804 Apr 13 18:05 cli-0-38

After download: 

-rwxrwxr-x  1 root stuff  51804 Apr 13 18:05 cli-0-38

```

Could you please advice how to achieve it?