$ git clone -n https://gitee.com/opencloudos-stream/rust-unicase.git /var/lib/mock/dist-oc9-epol-build-186770-80331/root/chroot_tmpdir/scmroot/rust-unicase
Cloning into '/var/lib/mock/dist-oc9-epol-build-186770-80331/root/chroot_tmpdir/scmroot/rust-unicase'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-unicase
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff03e59 !2 Update to Version 2.8.1 Merge pull request !2 from zeyouliu/master