$ git clone -n https://src.fedoraproject.org/rpms/os-autoinst.git /var/lib/mock/f42-build-3408538-45145/root/chroot_tmpdir/scmroot/os-autoinst
Cloning into '/var/lib/mock/f42-build-3408538-45145/root/chroot_tmpdir/scmroot/os-autoinst'...
$ git fetch origin df9bcd34c55bd33e46151378f2b70706a76ef392:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/os-autoinst
 * [new ref]         df9bcd34c55bd33e46151378f2b70706a76ef392 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df9bcd3 Disable tests on s390x to get build through (see #2345306)