git pull
composer self-update
composer update --prefer-source
bin/magento setup:upgrade
Thanks For consideration Dmitry but ,
These commands to run in ssh and how to run
"git pull" command and what does this command do.
composer self-update
composer update --prefer-source
bin/magento setup:upgrade
Connect to your web server via SSH. Log in to your Magento 2 server with full file system ownership.
Navigate to your Magento 2 ROOT directory.
Enter
composer require magento/product-community-edition 2.1.3 --no-update
If you want to later upgrade to future version, when they come out, you can change 2.1.3 to that version number.
composer update