I hope this is the right place to ask my question…
I recently changed my GitHub username. Dangerous, I know, but I really needed to for consistency. It seemed to work fine. I updated my .gitconfig file with my new username and primary email (yeah, changed that, too). I confirmed in the terminal that it was recognizing the changes.
I should mention that I am using Mac OS High Sierra and Atom as my IDE. When I made an edit to a project file in Atom and then opened the Git pane, I noticed my avatar wasn’t displaying. Instead it is the default one. When I pushed the commit to GitHub, I noticed the avatar displayed next to commits was the octacat. The name associated with the commits has changed, however, so it appears it is recognizing that change, but not displaying the avatar.
I did change my avatar as part of this process, and previous commits are displaying the new avatar instead of the old on both Atom and GitHub. It is just all new commits that are being affected.