$ git clone -n https://gitee.com/src-opencloudos-rpms/libreswan.git /var/lib/mock/dist-oc9-build-101011-65422/root/chroot_tmpdir/scmroot/libreswan
Cloning into '/var/lib/mock/dist-oc9-build-101011-65422/root/chroot_tmpdir/scmroot/libreswan'...
$ git fetch origin 3b5e5551a0a346f903bfc95fc93cca9dff3e6721:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libreswan
 * [new ref]         3b5e5551a0a346f903bfc95fc93cca9dff3e6721 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b5e555 import libreswan-4.15-1.tl4