About version control on the programming scripts of SQL Server, e.g., stored procedures and functions

We have an instance of SQL Server (MSSQL) version 2016, and the database contains programming scripts, e.g., stored procedures and functions. For the programming scripts of MSSQL, we wonder how to do version control on the source code. - For example, dump or export the script in text format SQL and check in to the Git repository. - Or please kindly point out if there is a better way of doing the job. We highly appreciate hints and suggestions.