Reinstall GRUB (bazzite still boots) [Solved]

Reinstalled Windows and it put the bootloader on the primary (but wrong) NVMe.
I can still boot into bazzite by manually choosing an entry from the UEFI boot menu.
How can I restore GRUB on my main drive?

P.S. Windows is now safely installed on the second NVMe after I manually removed the first NVMe from under the GPU.
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