$ git clone -n https://gitee.com/zhangwenlong01/userspace-rcu.git /var/lib/mock/dist-an23-build-504806-74854/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/dist-an23-build-504806-74854/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git fetch origin dd2e3acad1338f4ef3734c1e1f620a7c8522db15:KOJI_FETCH_HEAD
From https://gitee.com/zhangwenlong01/userspace-rcu
 * [new ref]         dd2e3acad1338f4ef3734c1e1f620a7c8522db15 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd2e3ac rebuild for loongarch64