Erick Mattos [off-list ref] writes:
The new --claim option is meant to solve this need by regenerating the
timestamp and setting as new author the committer or the one specified
on --author option.
I'll leave discussion on the option name to others.
+--claim::
+ When used with -C/-c/--amend options the committer takes over
+ the cloned commit authorship and renew the timestamp thus using
+ only the commit message from the source.
"The cloned commit" is a bit misleading; in the mind of users --amend does
not clone but rewrite, as the old commit usually only belongs to a reflog
and not any other branch. I'd rewrite it this way, perhaps.
When used with -C/-c/--amend options, declare that the authorship
of the resulting commit now belongs of the committer. This also
renews the author timestamp.
We also would need a test to protect this new feature from getting broken
by future updates.
Thanks.