$ git clone -n https://gitee.com/opencloudos-stream/libical.git /var/lib/mock/dist-ocs23-build-9138-232/root/chroot_tmpdir/scmroot/libical
Cloning into '/var/lib/mock/dist-ocs23-build-9138-232/root/chroot_tmpdir/scmroot/libical'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libical
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 782a0cf !2 update Source Merge pull request !2 from abushwang/master