int write_midx_file(const char *object_dir);
void clear_midx_file(struct repository *r);
int verify_midx_file(struct repository *r, const char *object_dir);
int write_midx_file(const char *object_dir);
void clear_midx_file(struct repository *r);
int verify_midx_file(struct repository *r, const char *object_dir);