My error was I was working so much in the ssh world for a few hours that it didn't occur to me until late that this was not an OS issue but an application issue. Setting up key pairs, no matter how many times I've done it, is so damn error prone that a repetitive motion disorder takes over.
I would add for others making this trip that a global change may benefit them. In my case the actual command was:
Is there any way for onion team to automatically check for instances of conflicting versions between overlay-fs installed packages and those already installed to the root flashed image? Or, am I altogether mixed up in my mental model such that seeing two 'git-core' entries from your find command is a misnomer?