$ git clone -n https://gitee.com/opencloudos-stream/rust-git2_0.17.git /var/lib/mock/dist-oc9-epol-build-97134-59980/root/chroot_tmpdir/scmroot/rust-git2_0.17
Cloning into '/var/lib/mock/dist-oc9-epol-build-97134-59980/root/chroot_tmpdir/scmroot/rust-git2_0.17'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-git2_0.17
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe8cdce update