git has a way to run scripts, which are invoked by specific git commands. The git hooks are located in <Mbed TLS root>/.git/hooks, and as such are not under version control for more information, see the git documentation.
The Mbed TLS git hooks are located in <Mbed TLS root>/tests/git-scripts directory, and one must create a soft link from <Mbed TLS root>/.git/hooks to <Mbed TLS root>/tests/git-scripts, in order to make the hook scripts successfully work.
Example:
Execute the following command to create a link on Linux from the Mbed TLS .git/hooks directory:ln -s ../../tests/git-scripts/pre-push.sh pre-push
Note: Currently the Mbed TLS git hooks work only on a GNU platform. If using a non-GNU platform, don't enable these hooks!
These scripts can also be used independently.