From: Soni L. <fakedme+git@gmail.com>
Date: Fri, 05 Mar 2021 16:47:14 GMT
Subject: Cross-signing commits
Message-ID: <355bb5d1-f661-4ac2-d536-d1c56ec5e408@gmail.com>

We have a somewhat unusual use-case where we need to cross-sign commits. 
Is there any way to do this in git? As far as one can tell, attempting 
to cross-sign a commit would cause its hash to change, and creating a 
signed child commit would break fast-forward merges. So these are a no-go.

Thanks.