$ git clone -n https://gitee.com/mgb01105731/grub2_1.git /var/lib/mock/dist-an23-build-345885-70159/root/chroot_tmpdir/scmroot/grub2_1
Cloning into '/var/lib/mock/dist-an23-build-345885-70159/root/chroot_tmpdir/scmroot/grub2_1'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/grub2_1
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f40ea01 fix CVE-2023-4692 and CVE-2023-4693