$ git clone -n https://src.fedoraproject.org/rpms/swig.git /var/lib/mock/f42-build-865389-173043/root/chroot_tmpdir/scmroot/swig
Cloning into '/var/lib/mock/f42-build-865389-173043/root/chroot_tmpdir/scmroot/swig'...
$ git fetch origin b2c552c89d153d6e79cbef32af3c69f34a00dd6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/swig
 * [new ref]         b2c552c89d153d6e79cbef32af3c69f34a00dd6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2c552c Rebuild for octave 9.2