$ git clone -n https://src.fedoraproject.org/rpms/python-s3transfer.git /var/lib/mock/f40-build-2204254-51952/root/chroot_tmpdir/scmroot/python-s3transfer
Cloning into '/var/lib/mock/f40-build-2204254-51952/root/chroot_tmpdir/scmroot/python-s3transfer'...
$ git fetch origin 470b31b65172ed75d0c08889297071752fbdd1da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-s3transfer
 * [new ref]         470b31b65172ed75d0c08889297071752fbdd1da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 470b31b Update to 0.10.0 (close RHBZ#2255577; fix RHBZ#2255624)