How to amend several commits in Git to change author -

i have made series of commits in git , realise forgot set user name , user email properties correctly (new machine). have not yet pushed these commits repository, how can correct these commits before (only 3 latest commits on master branch)?

i have been looking @ git reset , git commit -c <id> --reset-author, don't think i'm on right track.

rebase/amend seems inefficient, when have power of filter-branch @ fingertips:

git filter-branch --env-filter 'if [ "$git_author_email" = "incorrect@email" ];      git_author_email=correct@email;      git_author_name="correct name";      git_committer_email=$git_author_email;      git_committer_name="$git_author_name"; fi' -- --all 

(split across lines clarity, not necessary)

be sure inspect result when you're done, make sure didn't change didn't mean to!