$ git clone -n https://src.fedoraproject.org/rpms/python-boto3.git /var/lib/mock/f41-build-767276-13472/root/chroot_tmpdir/scmroot/python-boto3
Cloning into '/var/lib/mock/f41-build-767276-13472/root/chroot_tmpdir/scmroot/python-boto3'...
$ git fetch origin f7223c3af59d654144e1a5052ebe8ddda055cf45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-boto3
 * [new ref]         f7223c3af59d654144e1a5052ebe8ddda055cf45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7223c3 1.34.119