[Android Software/Hacking General [Developers Only]] Chron0s:
Works on a Motorola Moto G30 with super. However, since there is no TWRP for this device and the stock recovery is brain-dead, you have to use the sysrw_repair.sh method and flash with fastboot.

systemrw: Initiating procedure...

systemrw: Device is in Android mode. Ignoring
systemrw: Current device: motorola
systemrw: Current Android version: 11
systemrw: Current SELinux status: Permissive
systemrw: Current slot is: 0
systemrw: Your super partition is located at: /dev/block/mmcblk0p75
systemrw: / is read-only
systemrw: /product is read-only
systemrw: /vendor is read-only
systemrw: Adjusting permissions...
systemrw: Attempting to disable dm-verity and verification...
verification is already disabled on slot with suffix _a.
verity is already disabled on slot with suffix _a.
systemrw: Dumping super partition to: /data/local/tmp/systemrw_1.32/img/super_original.bin
systemrw: Please wait patiently...

21102592+0 records in
21102592+0 records out
10804527104 bytes (10 G) copied, 160.101076 s, 64 M/s

systemrw: Successfully dumped super partition to: /data/local/tmp/systemrw_1.32/img/super_original.bin
systemrw: Unpacking embedded partitions from /data/local/tmp/systemrw_1.32/img/super_original.bin
systemrw: Nested partitions were successfully extracted from super

systemrw: Current size of system_a.img in bytes: 857608192
systemrw: Current size of system_a.img in MB: 817
systemrw: Current size of system_a.img in 512-byte sectors: 1675016

systemrw: 'shared_blocks feature' detected @ system_a.img

systemrw: Increasing filesystem size of system_a.img...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_a.img to 261721 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_a.img is now 261721 (4k) blocks long.

systemrw: Removing 'shared_blocks feature' of system_a.img...
systemrw: Read-only lock of system_a.img successfully removed

systemrw: Shrinking size of system_a.img back to minimum size...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_a.img to 227660 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_a.img is now 227660 (4k) blocks long.

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systemrw: Current size of system_b.img in bytes: 30310400
systemrw: Current size of system_b.img in MB: 28
systemrw: Current size of system_b.img in 512-byte sectors: 59200

systemrw: 'shared_blocks feature' detected @ system_b.img

systemrw: Increasing filesystem size of system_b.img...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_b.img to 9250 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_b.img is now 9250 (4k) blocks long.

systemrw: Removing 'shared_blocks feature' of system_b.img...
systemrw: Read-only lock of system_b.img successfully removed

systemrw: Shrinking size of system_b.img back to minimum size...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_b.img to 7259 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_b.img is now 7259 (4k) blocks long.

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systemrw: Current size of system_ext_a.img in bytes: 649871360
systemrw: Current size of system_ext_a.img in MB: 619
systemrw: Current size of system_ext_a.img in 512-byte sectors: 1269280

systemrw: 'shared_blocks feature' detected @ system_ext_a.img

systemrw: Increasing filesystem size of system_ext_a.img...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_ext_a.img to 198325 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_ext_a.img is now 198325 (4k) blocks long.

systemrw: Removing 'shared_blocks feature' of system_ext_a.img...
systemrw: Read-only lock of system_ext_a.img successfully removed

systemrw: Shrinking size of system_ext_a.img back to minimum size...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/system_ext_a.img to 160226 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/system_ext_a.img is now 160226 (4k) blocks long.

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systemrw: Current size of system_ext_b.img in bytes: 0
systemrw: Current size of system_ext_b.img in MB: 0
systemrw: Current size of system_ext_b.img in 512-byte sectors: 0

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systemrw: Current size of vendor_a.img in bytes: 776093696
systemrw: Current size of vendor_a.img in MB: 740
systemrw: Current size of vendor_a.img in 512-byte sectors: 1515808

systemrw: 'shared_blocks feature' detected @ vendor_a.img

systemrw: Increasing filesystem size of vendor_a.img...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/vendor_a.img to 236845 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/vendor_a.img is now 236845 (4k) blocks long.

systemrw: Removing 'shared_blocks feature' of vendor_a.img...
systemrw: Read-only lock of vendor_a.img successfully removed

systemrw: Shrinking size of vendor_a.img back to minimum size...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/vendor_a.img to 194394 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/vendor_a.img is now 194394 (4k) blocks long.

=================================================

systemrw: Current size of vendor_b.img in bytes: 0
systemrw: Current size of vendor_b.img in MB: 0
systemrw: Current size of vendor_b.img in 512-byte sectors: 0

=================================================

systemrw: Current size of product_a.img in bytes: 2554847232
systemrw: Current size of product_a.img in MB: 2436
systemrw: Current size of product_a.img in 512-byte sectors: 4989936

systemrw: 'shared_blocks feature' detected @ product_a.img

systemrw: Increasing filesystem size of product_a.img...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/product_a.img to 779677 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/product_a.img is now 779677 (4k) blocks long.

systemrw: Removing 'shared_blocks feature' of product_a.img...
systemrw: Read-only lock of product_a.img successfully removed

systemrw: Shrinking size of product_a.img back to minimum size...
Resizing the filesystem on /data/local/tmp/systemrw_1.32/img/product_a.img to 633770 (4k) blocks.
The filesystem on /data/local/tmp/systemrw_1.32/img/product_a.img is now 633770 (4k) blocks long.

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systemrw: Current size of product_b.img in bytes: 0
systemrw: Current size of product_b.img in MB: 0
systemrw: Current size of product_b.img in 512-byte sectors: 0

=================================================

systemrw: Joining all extracted images back into one single super image...
systemrw: Please wait and ignore the invalid sparse warnings...

systemrw: Error! failed to create super_fixed.img file. Error code: 73

There's kernel source for this device but very little else.