$ git clone -n https://gitee.com/src-opencloudos-rpms/samba.git /var/lib/mock/dist-oc9-build-123050-72684/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/dist-oc9-build-123050-72684/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin 2a4d095962bf37ce22c7bbc1d76701810239b091:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/samba
 * [new ref]         2a4d095962bf37ce22c7bbc1d76701810239b091 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a4d095 import samba-4.19.4-8.tl4