$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-HTTP-Negotiate.git /var/lib/mock/dist-oc9-build-71197-47530/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate
Cloning into '/var/lib/mock/dist-oc9-build-71197-47530/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-HTTP-Negotiate
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84b2de3 import perl-HTTP-Negotiate-6.01-5.tl4