$ git clone -n https://gitee.com/pkm031/grub2.git /var/lib/mock/dist-an23-build-513483-75099/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-513483-75099/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 3db5e1cacf8285f6691b86739d8e5f1b0fd8b9ca:KOJI_FETCH_HEAD
From https://gitee.com/pkm031/grub2
 * [new ref]         3db5e1cacf8285f6691b86739d8e5f1b0fd8b9ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3db5e1c Fix grub2 relocation overflow error when booting on numa configurations