git-reauthor man page

git-reauthor — Rewrite history to change author´s identity


git reauthor [<options>]


Lets you replace the author and/or committer identities in commits and tags.

The command goes through all existing commits and tags in all local branches to selectively modify the identities present in those objects. All the other information such as dates, messages,.. are preserved.

You can rewrite all the identities in the commits and tags objects by using the --all flag, or only replace the identities whose email matches the value of the --old-email option. It is also possible to limit the rewrite to a certain type of identity: the author or the committer identity. By default, both of them are affected.
For each of those identities to update, the command will replace the name and/or email with the new correct values as defined via the options. If the new identity name to set is not defined, the current one will be kept (and vice-versa with the email).

WARNING! This command rewrites history and as a result you will not able to push your branch to the remote without using the --force option.
See more information with git help filter-branch.


-a, --all

Rewrite ALL identities in commits and tags.

-c, --use-config

Define correct values from user Git config
Values of --correct-email and --correct-name options take precedence over the ones from the config if specified as well

-e, --correct-email <email>

Define the correct email to set
Empty email ´´ is allowed

-n, --correct-name <name>

Define the correct name to set
Empty name ´´ is not allowed

-o, --old-email <email>

Rewrite identities matching old email in commits and tags
Empty email ´´ is allowed

-t, --type <id>

Define the type of identities affected by the rewrite
Possible type identifiers are: author, committer, both (default)


Replace the personal email and name of Jack to his work ones

$ git reauthor --old-email --correct-email --correct-name ´Jack Foobar´

Replace the email and name of Jack to the ones defined in the Git config

$ git reauthor --old-email --use-config

Replace only the email of Jack (keep the name already used)

$ git reauthor --old-email jack@perso --correct-email

Change only the committer email of Jack (keep the author email already used)

$ git reauthor --old-email --correct-email --type committer

Set Jack´s identity as the only one of the whole repository

$ git reauthor --all --correct-email --correct-name Jack

Set Jack as the only committer of the whole repository (keeps authors)

$ git reauthor --all --correct-email --correct-name Jack --type committer


Written by Damien Tardy-Panis <>

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July 2016