$ git clone -n https://gitee.com/opencloudos-stream/libldb.git /var/lib/mock/dist-ocs23-build-121246-8678/root/chroot_tmpdir/scmroot/libldb
Cloning into '/var/lib/mock/dist-ocs23-build-121246-8678/root/chroot_tmpdir/scmroot/libldb'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libldb
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c276196 !2 [2.8.0-1] Update to 2.8.0 Merge pull request !2 from zz/master