Description of problem:
"dnf repoquery --installed --queryformat '{name}'" triggered this

Version-Release number of selected component:
dnf-2.7.5-12.fc28

Additional info:
reporter:       libreport-2.9.5
cmdline:        /usr/bin/python3 /usr/bin/dnf repoquery --installed --queryformat {name}
crash_function: build_format_fn
exception_type: KeyError
executable:     /usr/bin/dnf
interpreter:    python3-3.6.6-1.fc28.x86_64
kernel:         4.18.8-200.fc28.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
repoquery.py:285:build_format_fn:KeyError: 'name'

Traceback (most recent call last):
  File "/usr/bin/dnf", line 58, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 179, in user_main
    errcode = main(args)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 64, in main
    return _main(base, args, cli_class, option_parser_class)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 99, in _main
    return cli_run(cli, base)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 115, in cli_run
    cli.run()
  File "/usr/lib/python3.6/site-packages/dnf/cli/cli.py", line 1016, in run
    return self.command.run()
  File "/usr/lib/python3.6/site-packages/dnf/cli/commands/repoquery.py", line 477, in run
    pkgs.add(self.build_format_fn(self.opts, pkg))
  File "/usr/lib/python3.6/site-packages/dnf/cli/commands/repoquery.py", line 285, in build_format_fn
    return rpm2py_format(opts.queryformat).format(po)
KeyError: 'name'

Local variables in innermost frame:
po: <dnf.cli.commands.repoquery.PackageWrapper object at 0x7f9b14bc6048>
pkg: <hawkey.Package object id 2, GConf2-3.2.6-20.fc28.x86_64, @System>
opts: Namespace(advisory=[], alldeps=False, allowerasing=None, arches=[], assumeno=None, assumeyes=None, available=False, best=None, bugfix=False, bugzilla=[], cacheonly=None, clean_requirements_on_remove=None, color=None, command=['repoquery'], comment=None, config_file_path=None, cves=[], debuglevel=None, debugsolver=None, deplist=False, destdir=None, disable_excludes=[], disableplugin=[], downloadonly=False, enableplugin=[], enhancement=False, errorlevel=None, exactdeps=False, excludepkgs=[], file=None, freshest_metadata=False, gpgcheck=None, groupmember=False, help=False, installroot=None, ip_resolve=None, key=[], latest_limit=None, legacy=False, list='installed', location=False, newpackage=False, obsoletes=None, packageatr=None, pkgfilter=None, plugins=None, queryall=False, queryfilelist=False, queryformat='{name}', queryinfo=False, querysourcerpm=False, querytags=False, quiet=None, recent=False, recursive=False, releasever=None, repo=[], repofrompath={}, repos_ed=[], resolve=False, rpmverbosity=None, security=False, setopts=[], severity=[], show_duplicates=False, showdupesfromrepos=None, skip_broken=None, sleeptime=None, srpm=False, tree=False, tsflags=None, verbose=None, version=None, whatconflicts=None, whatenhances=None, whatobsoletes=None, whatprovides=None, whatrecommends=None, whatrequires=None, whatsuggests=None, whatsupplements=None)
self: <dnf.cli.commands.repoquery.RepoQueryCommand object at 0x7f9b15d0b080>