$ git clone -n https://src.fedoraproject.org/rpms/erlang-protobuffs.git /var/lib/mock/f41-build-side-1-2811258-32927/root/chroot_tmpdir/scmroot/erlang-protobuffs
Cloning into '/var/lib/mock/f41-build-side-1-2811258-32927/root/chroot_tmpdir/scmroot/erlang-protobuffs'...
$ git fetch origin 9d2fadc410cb07a5a15119efbf1e5abbfd8219d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-protobuffs
 * [new ref]         9d2fadc410cb07a5a15119efbf1e5abbfd8219d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d2fadc No longer maintained. Upstream advices to switch to gpb