[Libguestfs] the Superblock last modify time is in the future after upload a file into the VM

I use the libguestfs to upload a file into the VM. But I found the date of the file in the VM is in the future(modify time is May 18, now is May 13), and this lead to the VM will auto fix it using fsck before boot. anyone can help or give me some tips? thank you very much. Best regards yandong