$ git clone -n https://src.fedoraproject.org/rpms/scipy.git /var/lib/mock/f39-build-1892392-42799/root/chroot_tmpdir/scmroot/scipy
Cloning into '/var/lib/mock/f39-build-1892392-42799/root/chroot_tmpdir/scmroot/scipy'...
$ git fetch origin e098f22b88222cac7d00b09de0ac1302768c7319:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scipy
 * [new ref]         e098f22b88222cac7d00b09de0ac1302768c7319 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e098f22 Fix build failure with Cython 3