$ git clone -n https://gitee.com/zhoujiajia111/grub2.git /var/lib/mock/dist-an23-build-453951-73610/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-453951-73610/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 5af93be222dde80d5a5e373ce67da77921cb8cb8:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/grub2
 * [new ref]         5af93be222dde80d5a5e373ce67da77921cb8cb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5af93be add patch