Clonezilla support arm64 (Banana Pi BPI-M64), Thanks to Steven Shiau (NCHC Free Software Labs in Taiwan) & https://clonezilla.org/, this image just for test .
image download link:
boot from sd and use clonezilla restore disk (image file at /dev/mmcblk0p2 (ext4) /home/partimag/) to emmc
youtube video demo: