$ git clone -n https://src.fedoraproject.org/rpms/ETL.git /var/lib/mock/f40-build-1978817-25236/root/chroot_tmpdir/scmroot/ETL
Cloning into '/var/lib/mock/f40-build-1978817-25236/root/chroot_tmpdir/scmroot/ETL'...
$ git fetch origin 07a0f02909e49c5bd40bd20930bfc026dc32ff60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ETL
 * [new ref]         07a0f02909e49c5bd40bd20930bfc026dc32ff60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07a0f02 1.5.2