$ git clone -n https://src.fedoraproject.org/rpms/openqa.git /var/lib/mock/f40-build-2221543-52689/root/chroot_tmpdir/scmroot/openqa
Cloning into '/var/lib/mock/f40-build-2221543-52689/root/chroot_tmpdir/scmroot/openqa'...
$ git fetch origin 4c48bc7904161f60b78cc9a212c0b5640f01d902:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openqa
 * [new ref]         4c48bc7904161f60b78cc9a212c0b5640f01d902 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c48bc7 Update to recent upstream git, resync spec