$ git clone -n https://gitee.com/src-opencloudos-rpms/libreswan.git /var/lib/mock/dist-oc9-build-242471-82983/root/chroot_tmpdir/scmroot/libreswan
Cloning into '/var/lib/mock/dist-oc9-build-242471-82983/root/chroot_tmpdir/scmroot/libreswan'...
$ git fetch origin 27f440191b45055d60149a589b2b802e519fa95b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libreswan
 * [new ref]         27f440191b45055d60149a589b2b802e519fa95b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27f4401 import libreswan-4.15-4.tl4