$ git clone -n https://gitee.com/lizhao2025/shim-unsigned-aarch64.git /var/lib/mock/dist-an23-build-497250-74608/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64
Cloning into '/var/lib/mock/dist-an23-build-497250-74608/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64'...
$ git fetch origin b70ceabd94024e453c50965375ce1aa6752b2c7d:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/shim-unsigned-aarch64
 * [new ref]         b70ceabd94024e453c50965375ce1aa6752b2c7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b70ceab Update code from upstream