$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Package-Generator.git /var/lib/mock/dist-oc9-build-71293-47540/root/chroot_tmpdir/scmroot/perl-Package-Generator
Cloning into '/var/lib/mock/dist-oc9-build-71293-47540/root/chroot_tmpdir/scmroot/perl-Package-Generator'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Package-Generator
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b222ceb import perl-Package-Generator-1.106-5.tl4