$ git clone -n https://src.fedoraproject.org/rpms/ipython.git /var/lib/mock/f40-build-2263467-54535/root/chroot_tmpdir/scmroot/ipython
Cloning into '/var/lib/mock/f40-build-2263467-54535/root/chroot_tmpdir/scmroot/ipython'...
$ git fetch origin 25e023a4727a8c23c1a1a1c2b1aad8a47b8aa296:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ipython
 * [new ref]         25e023a4727a8c23c1a1a1c2b1aad8a47b8aa296 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25e023a Update to 8.20.0 (rhbz#2257309)