git_rebase_reset_author.sh

#!/bin/sh
# shellcheck disable=SC2016

git rebase "$@" \
    --exec 'commit_date="$(git log -1 HEAD --pretty=format:"%ad")" && git log -1 HEAD && git log -1 HEAD --pretty=format:"%ad" &&  git commit --amend --no-edit --reset-author --date="$commit_date"'

In some cases, I want to reset the author and keep the date.

The reason of shellcheck disable=SC2016 is because I want to get the commit date at each rebasing step, which will give me correct date of that commit rather than set the date of each rebased commit to be the date of latest commit.

Besides, here I use "$@", so you can use --rebase or commit reference or anything you like.