$ git clone -n https://gitee.com/wency_cn/babeltrace.git /var/lib/mock/dist-an23-build-502415-74802/root/chroot_tmpdir/scmroot/babeltrace
Cloning into '/var/lib/mock/dist-an23-build-502415-74802/root/chroot_tmpdir/scmroot/babeltrace'...
$ git fetch origin 2eda48c568d2f95fe4e17d69acadda9418acd644:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/babeltrace
 * [new ref]         2eda48c568d2f95fe4e17d69acadda9418acd644 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2eda48c Update code from upstream