$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Net-DNS.git /var/lib/mock/dist-oc8-build-249814-83906/root/chroot_tmpdir/scmroot/perl-Net-DNS
Cloning into '/var/lib/mock/dist-oc8-build-249814-83906/root/chroot_tmpdir/scmroot/perl-Net-DNS'...
$ git fetch origin 90adec5446f32a7471a6b27a63039934fd7e356f:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Net-DNS
 * [new ref]         90adec5446f32a7471a6b27a63039934fd7e356f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90adec5 import perl-Net-DNS-1.15-2.tl3