$ git clone -n https://gitee.com/opencloudos-stream/rust-constant_time_eq.git /var/lib/mock/dist-oc9-epol-build-87090-57925/root/chroot_tmpdir/scmroot/rust-constant_time_eq
Cloning into '/var/lib/mock/dist-oc9-epol-build-87090-57925/root/chroot_tmpdir/scmroot/rust-constant_time_eq'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-constant_time_eq
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d429d7c update