Maybe we need "git commit --signoff" for some kind of QA or review process to bless a branch as ready to deploy and give a high-level summary of it, and a mode

Maybe we need "git commit --signoff" for some kind of QA or review process to bless a branch as ready to deploy and give a high-level summary of it, and a mode of "git log" that only shows the graph of commits having a particular Signed-Off-By value.