tdelibs git repo error

git clone http://scm.trinitydesktop.org/scm/git/tdelibs pushd tdelibs git submodule init git submodule update git checkout v3.5.13 popd

Results in the following errors

Submodule path 'libltdl': checked out '6d6796c294ca6e9b7f83c295217817c4bf486031' error: The following untracked working tree files would be overwritten by checkout: libltdl/CMakeLists.txt libltdl/COPYING.LIB libltdl/Makefile.am libltdl/README libltdl/ltdl.c libltdl/ltdl.h libltdl/ltdl.m4 libltdl/ltdl_win.c libltdl/ltdl_win.h Please move or remove them before you can switch branches.