$ git clone -n https://gitee.com/shirley0901/grub2_2.git /var/lib/mock/dist-an23-build-463946-73869/root/chroot_tmpdir/scmroot/grub2_2
Cloning into '/var/lib/mock/dist-an23-build-463946-73869/root/chroot_tmpdir/scmroot/grub2_2'...
$ git fetch origin f410ab0016cd45cfc139e2ef9e7d6cf6ed2fa9f9:KOJI_FETCH_HEAD
From https://gitee.com/shirley0901/grub2_2
 * [new ref]         f410ab0016cd45cfc139e2ef9e7d6cf6ed2fa9f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f410ab0 Add SW64 arch support