$ git clone -n https://src.fedoraproject.org/rpms/rust-resctl-demo.git /var/lib/mock/f40-build-2130804-50793/root/chroot_tmpdir/scmroot/rust-resctl-demo
Cloning into '/var/lib/mock/f40-build-2130804-50793/root/chroot_tmpdir/scmroot/rust-resctl-demo'...
$ git fetch origin 92b266eb46a2719e3fac96a8422177b19a466be8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-resctl-demo
 * [new ref]         92b266eb46a2719e3fac96a8422177b19a466be8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92b266e Regenerate with rust2rpm v24