$ git clone -n https://src.fedoraproject.org/rpms/syslog-ng.git /var/lib/mock/f41-build-side-1-2771391-32225/root/chroot_tmpdir/scmroot/syslog-ng
Cloning into '/var/lib/mock/f41-build-side-1-2771391-32225/root/chroot_tmpdir/scmroot/syslog-ng'...
$ git fetch origin 9013597e0ab620e3dfa0a3cc5935610b37c4fd45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/syslog-ng
 * [new ref]         9013597e0ab620e3dfa0a3cc5935610b37c4fd45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9013597 re-enable modules based on GRPC