You are looking at the wrong repository -- that is a portable version of libressl (I agree it's non-obvious how to find the true repository, as it is stored in CVS).
This is closer, and a bit busier: https://github.com/libressl-portable/openbsd
This is closer, and a bit busier: https://github.com/libressl-portable/openbsd
Sure more people committing but several days with no changes, vs the commit changes on OpenSSL.
Regarding libressl I'm not sure how it works, but I think the OpenBSD cvs server is a better source that the github repo (http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libssl/), but I'm not sure.
Also I'm not sure that a rapid flow of commits are necessarily a good indicator of quality.