Change commit author at one specific commit

Question

I want change author at one specific commit in history. It's not last commit.

I know about this question - How do I change the author of a commit in git?

But I thinking about something, where I identify commit by hash or short-hash.

Answer 1

Interactive rebase off of a point earlier in the history than the commit you need to modify. In the list of commits being rebased, change the text from pick to edit next to the hash of the one you want to modify. Then when git prompts you to change the commit, use this:

git commit --amend --author="Author Name <[email protected]>"

Answer 2

The answers in the question to which you linked are good answers and cover your situation (the other question is more general since it involves rewriting multiple commits).

As an excuse to try out git filter-branch, I wrote a script to rewrite the Author Name and/or Author Email for a given commit:

#!/bin/sh

#
# Change the author name and/or email of a single commit.
#
# change-author [-f] commit-to-change [branch-to-rewrite [new-name [new-email]]]
#
#     If -f is supplied it is passed to "git filter-branch".
#
#     If <branch-to-rewrite> is not provided or is empty HEAD will be used.
#     Use "--all" or a space separated list (e.g. "master next") to rewrite
#     multiple branches.
#
#     If <new-name> (or <new-email>) is not provided or is empty, the normal
#     user.name (user.email) Git configuration value will be used.
#

force=''
if test "x$1" = "x-f"; then
    force='-f'
    shift
fi

die() {
    printf '%s\n' "$@"
    exit 128
}
targ="$(git rev-parse --verify "$1" 2>/dev/null)" || die "$1 is not a commit"
br="${2:-HEAD}"

TARG_COMMIT="$targ"
TARG_NAME="${3-}"
TARG_EMAIL="${4-}"
export TARG_COMMIT TARG_NAME TARG_EMAIL

filt='

    if test "$GIT_COMMIT" = "$TARG_COMMIT"; then
        if test -n "$TARG_EMAIL"; then
            GIT_AUTHOR_EMAIL="$TARG_EMAIL"
            export GIT_AUTHOR_EMAIL
        else
            unset GIT_AUTHOR_EMAIL
        fi
        if test -n "$TARG_NAME"; then
            GIT_AUTHOR_NAME="$TARG_NAME"
            export GIT_AUTHOR_NAME
        else
            unset GIT_AUTHOR_NAME
        fi
    fi

'

git filter-branch $force --env-filter "$filt" -- $br