https://bugzilla.redhat.com/show_bug.cgi?id=2056247
--- Comment #2 from Neal Gompa ngompa13@gmail.com ---
INFO: installing package(s): /builddir/netplan-debuginfo-0.104-1.fc37.x86_64.rpm /builddir/netplan-debugsource-0.104-1.fc37.x86_64.rpm /builddir/netplan-devel-0.104-1.fc37.x86_64.rpm /builddir/netplan-default-backend-NetworkManager-0.104-1.fc37.noarch.rpm /builddir/netplan-libs-0.104-1.fc37.x86_64.rpm /builddir/netplan-0.104-1.fc37.x86_64.rpm /builddir/netplan-default-backend-networkd-0.104-1.fc37.noarch.rpm ERROR: Command failed: # /usr/bin/systemd-nspawn -q -M 15616a3eb4194e368d752ec92ce7359e -D /var/lib/mock/fedora-rawhide-x86_64-bootstrap/root -a --capability=cap_ipc_lock --bind=/tmp/mock-resolv.kgs9pyo6:/etc/resolv.conf --console=pipe --setenv=TERM=vt100 --setenv=SHELL=/bin/bash --setenv=HOME=/var/lib/mock/fedora-rawhide-x86_64/root/installation-homedir --setenv=HOSTNAME=mock --setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin --setenv=PROMPT_COMMAND=printf "\033]0;<mock-chroot>\007" --setenv=PS1=<mock-chroot> \s-\v$ --setenv=LANG=C.UTF-8 --setenv=LC_MESSAGES=C.UTF-8 --resolv-conf=off /usr/bin/dnf --installroot /var/lib/mock/fedora-rawhide-x86_64/root/ --releasever 37 --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk --disableplugin=versionlock install /builddir/netplan-debuginfo-0.104-1.fc37.x86_64.rpm /builddir/netplan-debugsource-0.104-1.fc37.x86_64.rpm /builddir/netplan-devel-0.104-1.fc37.x86_64.rpm /builddir/netplan-default-backend-NetworkManager-0.104-1.fc37.noarch.rpm /builddir/netplan-libs-0.104-1.fc37.x86_64.rpm /builddir/netplan-0.104-1.fc37.x86_64.rpm /builddir/netplan-default-backend-networkd-0.104-1.fc37.noarch.rpm --setopt=tsflags=nocontexts
This is expected, since two subpackages are mutually conflicting and only one of them can be installed at a time.