$ git clone -n https://src.fedoraproject.org/rpms/octave-dicom.git /var/lib/mock/f41-build-1115197-20214/root/chroot_tmpdir/scmroot/octave-dicom
Cloning into '/var/lib/mock/f41-build-1115197-20214/root/chroot_tmpdir/scmroot/octave-dicom'...
$ git fetch origin 6ce8abb3396194d8078797f4cc50909a4689e40a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-dicom
 * [new ref]         6ce8abb3396194d8078797f4cc50909a4689e40a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ce8abb Remove Packit config