According to this QA, we may use safe.directory argument to add directory to be marked as whitelist, due to latest CVE found on git. But it seems there is no way to add certain dirs recursively.
I have so many repositories to add, so i want to use recursive add instead, if the feature is exist. The repositories mostly placed on my mounted NTFS disk on ubuntu, so the owner of files inside is always root. Looks like the latest update restricts git operations if the logged in user is not match with owner of the git directory by showing error such fatal: unsafe repository ('/media/data1/project1/si/project' is owned by someone else.
What I did for now, but may not be the perfect solution, is to find all .git folders and add them through a find command.
find /full/path -name '.git' -type d -exec bash -c 'git config --global --add safe.directory ${0%/.git}' {} \;
Want to remind, that it is necessary to add the full path in the find command, so it will resolve the full path.