I've just commited a change for my project wiki from the web UI, but the change commited twice:

First commit is the change itself

Second commit is empty, but with the same commit message

Just after update there was a notice on top of the page (I can't remember exactly):

{{{
NB: ...
Updated files 0, Merged 1
}}}

Here is a wiki page: [https://bitbucket.org/zzsergant/hgsccpackage/wiki/Home

Clone the wiki repository and see the revision 90 (Added description for v1.6.1).

How can I strip this empty revision from my wiki repository ?