If you forgot to configure git with your email and username, you _may_ want to use the following shell script, customizing the email it searches for and the name and email it replaces them with to what you see in git log. Be careful! Heed the warnings from the source: https://help.github.com/articles/changing-author-info

git-reauthor.sh

#!/bin/sh
 
git filter-branch --env-filter '
 
an="$GIT_AUTHOR_NAME"
am="$GIT_AUTHOR_EMAIL"
cn="$GIT_COMMITTER_NAME"
cm="$GIT_COMMITTER_EMAIL"
 
if [ "$GIT_COMMITTER_EMAIL" = "kerrick@dirk-tooth.(none)" ]
then
    cn="Kerrick Long"
    cm="me@kerricklong.com"
fi
if [ "$GIT_AUTHOR_EMAIL" = "kerrick@dirk-tooth.(none)" ]
then
    an="Kerrick Long"
    am="me@kerricklong.com"
fi
 
export GIT_AUTHOR_NAME="$an"
export GIT_AUTHOR_EMAIL="$am"
export GIT_COMMITTER_NAME="$cn"
export GIT_COMMITTER_EMAIL="$cm"
'