Mirror prober doesn't know how to generate the filename for binary packages whose version starts with "<some-number>:"

The mirror prober was thought that to generate the filename for a binarypackagerelease (BPR), all he needed to do was to append a string of the format "_version_architecture.extension" to that binarypackagename. The problem is that we have some BPRs for which this won't work.

For example, we have a binarypackagerelease for the 'xfs', with version '1:1.0.1-0ubuntu2', but the actual filename, as one can see at http://archive.ubuntu.com/ubuntu/pool/universe/x/xfs/ is xfs_1.0.1-0ubuntu2_i386.deb, that is, without the leading '1:' of the version.

I'm tempted to assume that the fix would be to simply remove any number of digits followed by a colon from the version, before appending it to the BPR's name. If this is correct, does it apply to SourcePackageReleases too?