While looking into how to drop a #git commit, I have realized that rewriting the history might be a better option. This option is typically used if one wants to change the email or name of the author.
https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History#_changing_email_addresses_globally
The example code from the site is
```
$ git filter-branch --commit-filter '
if [ "$GIT_AUTHOR_EMAIL" = "schacon@localhost" ];
then
GIT_AUTHOR_NAME="Scott Chacon";
GIT_AUTHOR_EMAIL="schacon@example.com";
git commit-tree "$@";
else
git commit-tree "$@";
fi' HEAD
```
One might need to force the function if one decides to run it multiple times for various `$GIT_AUTHOR_EMAIL`. Alternately, one could append the other emails with the OR operator.