$ git clone -n https://gitee.com/src-opencloudos-rpms/git.git /var/lib/mock/dist-oc9-build-63681-16463/root/chroot_tmpdir/scmroot/git
Cloning into '/var/lib/mock/dist-oc9-build-63681-16463/root/chroot_tmpdir/scmroot/git'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/git
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b251622 import git-2.41.0-10.tl4