$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-constant.git /var/lib/mock/dist-oc9-build-62745-16463/root/chroot_tmpdir/scmroot/perl-constant
Cloning into '/var/lib/mock/dist-oc9-build-62745-16463/root/chroot_tmpdir/scmroot/perl-constant'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-constant
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4b8969 import perl-constant-1.33-5.tl4