$ git clone -n https://gitee.com/src-opencloudos-rpms/samba.git /var/lib/mock/dist-oc8-build-229269-81308/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/dist-oc8-build-229269-81308/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin b9197bf317f0aa93a7f1ac73523e719217fcd98b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/samba
 * [new ref]         b9197bf317f0aa93a7f1ac73523e719217fcd98b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9197bf import samba-4.19.4-12.tl3