I've tried git-cpan clone XML::DT and after lots of created tag messages I got many of these:
fatal: multiple stage entries for merged file 'examples' at /Users/gabor/perl5/perlbrew/perls/perl-5.20.1_WITH_THREADS/lib/site_perl/5.20.1/Git/CPAN/Patch/Command/Import.pm line 191.