Any way to register a hook on response timeout?

[MrHate]

I'm using wrk for my testing work, but my service is not completed or strong presently.
Sometimes the test result just showed me that there were some timeout out of the test.
I have not found any hint in the existing issues or documents related to such a requirement.
I want to know how the request looks like when a timeout is triggered.
I'd appreciate it if someone could tell me whether there is a way to achieve this without modifying the source code?