$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Xerces.git /var/lib/mock/f29-build-3669-939/root/thebuilddir/tmp/scmroot/perl-XML-Xerces
Cloning into '/var/lib/mock/f29-build-3669-939/root/thebuilddir/tmp/scmroot/perl-XML-Xerces'...
$ git reset --hard cbbafaf601ad31f245f403615f45870af4073330
HEAD is now at cbbafaf - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild