$ git clone -n https://gitee.com/kanghou-silver/userspace-rcu.git /var/lib/mock/dist-an23-build-461281-73770/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/dist-an23-build-461281-73770/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git fetch origin 1e957904c05d62b5c185300b537add0c4f8c9afd:KOJI_FETCH_HEAD
From https://gitee.com/kanghou-silver/userspace-rcu
 * [new ref]         1e957904c05d62b5c185300b537add0c4f8c9afd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e95790 add sw arch