$ git clone -n https://gitee.com/fundawang/shim-unsigned-x64.git /var/lib/mock/dist-an23-build-352717-70993/root/chroot_tmpdir/scmroot/shim-unsigned-x64
Cloning into '/var/lib/mock/dist-an23-build-352717-70993/root/chroot_tmpdir/scmroot/shim-unsigned-x64'...
$ git fetch origin 8806bcd690df03f7d31a6db943d5d83907f82167:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/shim-unsigned-x64
 * [new ref]         8806bcd690df03f7d31a6db943d5d83907f82167 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8806bcd 15.8