$ git clone -n https://src.fedoraproject.org/rpms/arpack.git /var/lib/mock/f39-build-1494781-34542/root/chroot_tmpdir/scmroot/arpack
Cloning into '/var/lib/mock/f39-build-1494781-34542/root/chroot_tmpdir/scmroot/arpack'...
$ git fetch origin 5d44a2ea27421061dee540fde030187e050e170a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arpack
 * [new ref]         5d44a2ea27421061dee540fde030187e050e170a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d44a2e update to 3.9.1 (#2244208, #2241361)