$ git clone -n https://gitee.com/src-opencloudos-rpms/libldb /var/lib/mock/dist-oc8-build-56926-15178/root/chroot_tmpdir/scmroot/libldb
Cloning into '/var/lib/mock/dist-oc8-build-56926-15178/root/chroot_tmpdir/scmroot/libldb'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libldb
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3eae532 import libldb-2.6.1-1.tl3