GNOME Bugzilla – Bug 580340
Commit dialog should have the "amend" option
Last modified: 2009-05-26 06:52:05 UTC
That's pretty useful to avoid messing up your (public) history with micro commits.
This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report.
This should really reuse the last commit message as the command line version does!