File permission issue with Mac/Windows when using git

Question

I ran the following code to pull files from windows git repository.

git pull /Volumes/sucho/Desktop/git/setup

And I connect the Windows directory as follows.

tell application "Finder"
    mount volume "cifs://WINDOWS/c$/Users/sucho" as user name "USR" with password "PW"
end tell

It works well, but the problem is the pulled files from windows have 700 (rwx------). How can I set it 644(rw-r--r--) as default?