With a free SmartGit license key, you'll get access to the following features:

Remember that SmartGit is just a GUI wrapper around standard Git. You can learn the command line – it’s free, powerful, and available everywhere.

After deleting the file, restart SmartGit and you will be prompted to select your license type again. Pricing | SmartGit

Git is an evolving technology. Platform providers like GitHub, GitLab, and Bitbucket frequently update their APIs and authentication methods (such as the shift to personal access tokens over passwords). A cracked version of SmartGit typically cannot connect to the official update servers. Within months, your "free" version will become obsolete, unable to push to repositories or authenticate with modern security standards.

The search for a is a dangerous and unnecessary wild goose chase. The legal, safe, and free option exists right under your nose.