$ git clone -n https://src.fedoraproject.org/rpms/shim-unsigned-x64.git /var/lib/mock/f33-build-271552-51555/root/chroot_tmpdir/scmroot/shim-unsigned-x64
Cloning into '/var/lib/mock/f33-build-271552-51555/root/chroot_tmpdir/scmroot/shim-unsigned-x64'...
$ git reset --hard 81bb2f7f4add468f156948c4950c6be331381099
HEAD is now at 81bb2f7 Fix bad sources *again*