$ git clone -n https://src.fedoraproject.org/rpms/swig.git /var/lib/mock/f40-build-789727-135966/root/chroot_tmpdir/scmroot/swig
Cloning into '/var/lib/mock/f40-build-789727-135966/root/chroot_tmpdir/scmroot/swig'...
$ git fetch origin 3d52b3c5d12b5f703b324e592e4772a292b57c8f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/swig
 * [new ref]         3d52b3c5d12b5f703b324e592e4772a292b57c8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d52b3c Temporary disable java tests (rhbz#2266693)