$ git clone -n https://src.fedoraproject.org/rpms/ipython.git /var/lib/mock/f40-build-2416221-60573/root/chroot_tmpdir/scmroot/ipython
Cloning into '/var/lib/mock/f40-build-2416221-60573/root/chroot_tmpdir/scmroot/ipython'...
$ git fetch origin 1ca3bcfe151b08d7e26152ddee35e5fccd8ddebd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ipython
 * [new ref]         1ca3bcfe151b08d7e26152ddee35e5fccd8ddebd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ca3bcf Update to 8.21.0 (rhbz#2262258)