bootc-202507222002.ged787b4cee-1.el10.x86_64 have this issue, but bootc-202507181316.g03fa72b194-1.el10.x86_64 does not.
According to the commit 03fa72b194 -> ed787b4cee, I guess the issue should be related with c2c918c

error: Installing to disk: Failed to spawn loopback cleanup helper: Failed to spawn loopback cleanup helper: No such file or directory (os error 2)

Test log: https://artifacts.osci.redhat.com/testing-farm/2dccf9e7-3148-4ed4-b8ba-f07d1bdab255/