$ git clone -n https://gitee.com/src-opencloudos-rpms/libreswan.git /var/lib/mock/dist-oc8-build-81746-55903/root/chroot_tmpdir/scmroot/libreswan
Cloning into '/var/lib/mock/dist-oc8-build-81746-55903/root/chroot_tmpdir/scmroot/libreswan'...
$ git fetch origin 15a5e84356b2662bede42807334c4c0c1dcbba32:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libreswan
 * [new ref]         15a5e84356b2662bede42807334c4c0c1dcbba32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15a5e84 import libreswan-4.12-2.tl3.4