$ git clone -n https://gitee.com/opencloudos-stream/rust-git2.git /var/lib/mock/dist-ocs23-epol9-build-209915-15132/root/chroot_tmpdir/scmroot/rust-git2
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-209915-15132/root/chroot_tmpdir/scmroot/rust-git2'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-git2
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd1ee2f update