poudriere jail: specific commit

Hello!

I'm running 14.0-CURRENT #0 fb3edd4f3 and I need a poudriere jail with same
commit fb3edd4f3.

porters handbook says:
---
If a specific Subversion revision is needed, append it to the version
string. For example:

# poudriere jail -c -j 11i386 -v stable/11_at_123456 -a i386 -m svn+https
---
How can I tell poudriere to fetch git commit fb3edd4f3?

I'm asking this because I need poudriere testport, and I will like that
jailed version is same as installed OS.

Thanks,

Nuno Teixeira