$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-YAML.git /var/lib/mock/dist-oc9-build-180233-80096/root/chroot_tmpdir/scmroot/perl-YAML
Cloning into '/var/lib/mock/dist-oc9-build-180233-80096/root/chroot_tmpdir/scmroot/perl-YAML'...
$ git fetch origin 5b621e003841c13c00462f16c40b4012231cba62:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-YAML
 * [new ref]         5b621e003841c13c00462f16c40b4012231cba62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b621e0 import perl-YAML-1.30-5.tl4