$ git clone -n https://gitee.com/src-opencloudos-rpms/libreswan.git /var/lib/mock/dist-oc8-build-73038-48514/root/chroot_tmpdir/scmroot/libreswan
Cloning into '/var/lib/mock/dist-oc8-build-73038-48514/root/chroot_tmpdir/scmroot/libreswan'...
$ git fetch origin dfec0da3d3496acb9ffb61830703216c8218d50f:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libreswan
 * [new ref]         dfec0da3d3496acb9ffb61830703216c8218d50f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfec0da import libreswan-4.12-2.tl3.2