$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Env.git /var/lib/mock/dist-oc9-build-71150-47522/root/chroot_tmpdir/scmroot/perl-Env
Cloning into '/var/lib/mock/dist-oc9-build-71150-47522/root/chroot_tmpdir/scmroot/perl-Env'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Env
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af206c2 import perl-Env-1.05-5.tl4