How to rebase when some commit hashes are in some commit messages

[Francois-Xavier Le Bail <devel.fx.lebail@orange.fr>]

Hello,

[I try some search engines without success, perhaps I have missed something].

For example, if I rebase the following commits, I would want that if
the commit hash 2222222... become 7777777...,
the message
"Update test output for 2222222222222222222222222222222222222222"
become
"Update test output for 7777777..."

Is it possible currently? And if yes how?

Greetings,
Francois-Xavier

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commit 6666666666666666666666666666666666666666
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 17:14:58 2015 -0700

Fix 5

xxx xxx xxx xxx

commit 5555555555555555555555555555555555555555
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 16:58:58 2015 -0700

Update test output for 2222222222222222222222222222222222222222

commit 4444444444444444444444444444444444444444
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 17:50:27 2015 -0700

Fix 4

commit 3333333333333333333333333333333333333333
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 15:01:36 2015 -0700

Fix 3

xxx xxx xxx xxx

commit 2222222222222222222222222222222222222222
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 11:20:28 2015 -0700

Fix 2

xxx xxx xxx xxx

commit 1111111111111111111111111111111111111111
Author: First Last <first.last@example.com>
Date:  Fri Jul 3 09:15:59 2015 -0700

Fix 1

xxx xxx xxx xxx

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