$ git clone -n https://gitee.com/opencloudos-stream/rust-git-delta.git /var/lib/mock/dist-oc9-epol-build-230266-81447/root/chroot_tmpdir/scmroot/rust-git-delta
Cloning into '/var/lib/mock/dist-oc9-epol-build-230266-81447/root/chroot_tmpdir/scmroot/rust-git-delta'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-git-delta
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b487f1 !3 update to 0.18 Merge pull request !3 from zeyouliu/master