Kernel panic not syncing: No working init found. (Debian sid)

Question

On a dual-boot system: Fedora rawhide with Debian sid, the system will not boot.
Fedora is operational, Debian is unable to boot.
grub is being updated from within Fedora (entries refreshed properly).

Kernel panic message:

Initramfs unpacking failed: ZSTD-compressed data is corrupt
Failed to execute /init (error -2)
CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.15-amd64 #1
Kernel panic not syncing: No working init found.
Try passing init option to kernel.
See Linux Documentation/admin-guide/init.rst for guidance.

Things I have tried:

1. chroot into the system from GParted Live:
   • chroot commands:

     sudo mount /dev/sda1 /mnt
     sudo mount --bind /dev /mnt/dev
     sudo mount --bind /dev/pts /mnt/dev/pts
     sudo mount --bind /proc /mnt/proc
     sudo mount --bind /sys /mnt/sys
     sudo chroot /mnt
     

   • apt update && apt upgrade
   • apt --reinstall install linux-image-amd64
   • update-initramfs -u -k all
2. GRUB:
   • Provide init=/bin/init
   • Boot from command-line.
3. Lower Kernel version.
4. Documentation/admin-guide/init.rst:
   • readelf -d <INIT>|grep NEEDED is satisfied.
   • There was no /bin/init at all.