$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc9-build-66810-17218/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc9-build-66810-17218/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 658f47b524909c43751575ddaabf1cecad9026f1:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         658f47b524909c43751575ddaabf1cecad9026f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 658f47b import grub2-2.06-7.tl4