$ git clone -n https://gitee.com/opencloudos-stream/rust-memmap2_0.7.git /var/lib/mock/dist-oc9-epol-build-97760-60108/root/chroot_tmpdir/scmroot/rust-memmap2_0.7
Cloning into '/var/lib/mock/dist-oc9-epol-build-97760-60108/root/chroot_tmpdir/scmroot/rust-memmap2_0.7'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-memmap2_0.7
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9d1d92 update