$ git clone -n https://gitee.com/src-opencloudos-rpms/etcd.git /var/lib/mock/dist-oc9-build-236158-82238/root/chroot_tmpdir/scmroot/etcd
Cloning into '/var/lib/mock/dist-oc9-build-236158-82238/root/chroot_tmpdir/scmroot/etcd'...
$ git fetch origin b2879a054db61520e38e22d5d7824db2f8a001fe:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/etcd
 * [new ref]         b2879a054db61520e38e22d5d7824db2f8a001fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2879a0 import etcd-3.5.21-2.tl4