$ git clone -n https://src.fedoraproject.org/rpms/python-tkrzw.git /var/lib/mock/f41-build-814882-149243/root/chroot_tmpdir/scmroot/python-tkrzw
Cloning into '/var/lib/mock/f41-build-814882-149243/root/chroot_tmpdir/scmroot/python-tkrzw'...
$ git fetch origin 46d6953b4f35eab2be09548662274863dc72b06c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-tkrzw
 * [new ref]         46d6953b4f35eab2be09548662274863dc72b06c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46d6953 Version bump