$ git clone -n https://gitee.com/src-opencloudos-rpms/libldb.git /var/lib/mock/dist-oc8-build-116933-68250/root/chroot_tmpdir/scmroot/libldb
Cloning into '/var/lib/mock/dist-oc8-build-116933-68250/root/chroot_tmpdir/scmroot/libldb'...
$ git fetch origin dee941ec675431d52561b953b973c0c5e71b8662:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libldb
 * [new ref]         dee941ec675431d52561b953b973c0c5e71b8662 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dee941e import libldb-2.8.0-1.tl3