$ git clone -n https://gitee.com/src-opencloudos-rpms/samba.git /var/lib/mock/dist-oc8-build-215159-80830/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/dist-oc8-build-215159-80830/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin a4050b1280d3815216cd9c121fe03918a8d66679:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/samba
 * [new ref]         a4050b1280d3815216cd9c121fe03918a8d66679 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4050b1 import samba-4.19.4-10.tl3