$ git clone -n https://gitee.com/opencloudos-stream/unicorn.git /var/lib/mock/dist-oc9-epol-build-227692-81172/root/chroot_tmpdir/scmroot/unicorn
Cloning into '/var/lib/mock/dist-oc9-epol-build-227692-81172/root/chroot_tmpdir/scmroot/unicorn'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/unicorn
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e36a6c0 !3 built for riscv64 without python3 Merge pull request !3 from Shahryar2/master