Not problem at all @dvdchr-tvlk, glad you solved the issue 
To answer your question (and for future reference)
By default we don’t set any limit, the only limit is the build’s max build time.
If you want to set a limit yourself then you can use the timeout param as you said (related announcement post: Monthly release of Bitrise CLI tools and summary of updates (September, 2017) - CLI v1.9.0).
Not sure if git itself has any default hard limit… We most certainly do not set or change that, our stacks have default git installs & configs, the same you get when you install git yourself.
Questions & feedback are always welcome!
Happy Building!