for_each_branch_ref_submodule  188 refs.h         extern int for_each_branch_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
for_each_branch_ref_submodule 2125 revision.c     		handle_refs(submodule, revs, *flags, for_each_branch_ref_submodule);