koji--requires Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build) .

[jj]

hi guys:
I am trying to use mock to build fedora 19 on mips machines, the base system can work ,
so I got some errors while building some src.rpm on koji. (not familar to fedora)
Enviroment:
kojihub  and kojira are running on the same host ( a x86_64)
kojid on a mips machine.
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when I ran "mock --rebuild some.src.rpm", I got errors on building build root enviroment.
It seems something wrong with yum on the base system.
any suggestion ? thx. I am sure the deps is ok , there's required package in the repo made by koji regen-repo.

root:/usr/lib/rpm# yum --installroot /var/lib/mock/fc19-mipsel-build-1-2/root/ groupinstall build
There is no installed groups file.
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: perl(Getopt::Long)
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: rpm >= 4.8.0
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: /usr/bin/perl
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: coreutils
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: /bin/sh
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: /bin/bash
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: zip
Error: Package: redhat-rpm-config-9.1.0-45.fc19.noarch (build)
           Requires: dwz >= 0.4

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