$ git clone -n https://gitee.com/zhoujiajia111/grub2.git /var/lib/mock/dist-an23-build-465263-73955/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-465263-73955/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 155a3b5991a64bac607492410bf30c995a828dcb:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/grub2
 * [new ref]         155a3b5991a64bac607492410bf30c995a828dcb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 155a3b5 fix cve