$ git clone -n https://src.fedoraproject.org/rpms/python-cytoolz.git /var/lib/mock/f39-build-1556406-37187/root/chroot_tmpdir/scmroot/python-cytoolz
Cloning into '/var/lib/mock/f39-build-1556406-37187/root/chroot_tmpdir/scmroot/python-cytoolz'...
$ git fetch origin 99219ece09da90a2f30c4d484c3cc4cc74fc1ef2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cytoolz
 * [new ref]         99219ece09da90a2f30c4d484c3cc4cc74fc1ef2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99219ec Update to 0.12.2