$ git clone -n https://gitee.com/src-anolis-os/grub2.git /var/lib/mock/dist-an23.5-build-543281-86156/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23.5-build-543281-86156/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/grub2
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at adc19d8 x86-efi: use EFI_LOADER_CODE for kernel memory allocation