Seems it got synced again upstream. Build was failing.
==> null.null: Running local shell script: /tmp/packer-shell623232339
Build 'null.null' finished after 19 milliseconds 905 microseconds.
qemu.opensuse: openSUSE-Leap-15.6-Minimal-VM.x86_64-Cloud.qcow2 268.26 MiB / 268.26 MiB [==================================================================] 100.00% 12s
==> qemu.opensuse: Checksum did not match, removing /root/.cache/packer/ffd9670c3784907bfc347cd70eeaca43da56f4f9.iso
==> qemu.opensuse: error downloading ISO: [Checksums did not match for /root/.cache/packer/ffd9670c3784907bfc347cd70eeaca43da56f4f9.iso.
==> qemu.opensuse: Expected: a160a84ec760a8beddaeb09579430851e43ac4c36620191305634a46de640c7a
==> qemu.opensuse: Got: 752ffbd2cf187a2bf1f796f6dffac7ce4f7a9e870eb86ff29cec714c0a831be6
==> qemu.opensuse: *sha256.digest]
Build 'qemu.opensuse' errored after 16 seconds 713 milliseconds: error downloading ISO: [Checksums did not match for /root/.cache/packer/ffd9670c3784907bfc347cd70eeaca43da56f4f9.iso.
Expected: a160a84ec760a8beddaeb09579430851e43ac4c36620191305634a46de640c7a
Got: 752ffbd2cf187a2bf1f796f6dffac7ce4f7a9e870eb86ff29cec714c0a831be6
*sha256.digest]
==> Wait completed after 16 seconds 713 milliseconds
==> Some builds didn't complete successfully and had errors:
--> qemu.opensuse: error downloading ISO: [Checksums did not match for /root/.cache/packer/ffd9670c3784907bfc347cd70eeaca43da56f4f9.iso.
Expected: a160a84ec760a8beddaeb09579430851e43ac4c36620191305634a46de640c7a
Got: 752ffbd2cf187a2bf1f796f6dffac7ce4f7a9e870eb86ff29cec714c0a831be6
*sha256.digest]
==> Builds finished. The artifacts of successful builds are:
--> null.null: Did not export anything. This is the null builder
qemu-img: Could not open 'build/opensuse15/opensuse15': Could not open 'build/opensuse15/opensuse15': No such file or directory
[INFO] Packer opensuse15 done
Seems it got synced again upstream. Build was failing.