$ git clone -n https://gitee.com/src-opencloudos-rpms/python-lxml.git /var/lib/mock/dist-oc8-build-249806-83901/root/chroot_tmpdir/scmroot/python-lxml
Cloning into '/var/lib/mock/dist-oc8-build-249806-83901/root/chroot_tmpdir/scmroot/python-lxml'...
$ git fetch origin 4eb335a37d4666c5a62e78270c4385cc0b1a15a0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-lxml
 * [new ref]         4eb335a37d4666c5a62e78270c4385cc0b1a15a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4eb335a import python-lxml-4.2.3-5.tl3