<?php foreach ($terms as $term) {echo '<a href="'.get_term_link($term->slug, 'sitecat').'">'.$term->name.'</a>,';} ?> >> <a href="<?php the_permalink(); ?>"><?php the_title('', ''); ?></a></h2></span>

$terms = get_the_terms( $post->ID, 'mytaxonomy' );

$term = array_pop($terms);

echo '<a href="'.get_term_link($term->slug, 'mytaxonomy').'">'.$term->name.'</a>,'

$terms = get_the_terms( $post->ID , 'your_custom_taxonomy' );
foreach( $terms as $term ) {
    print $term->name;
    break;
    unset($term);
}

$terms = get_the_terms( $post->ID, 'sitecat' );
$first_term = $terms[0];

echo $first_term->name;

$first_term = get_the_terms( $post->ID, 'TAXONOMY_NAME' )[0];
var_dump( $first_term );

$first_term_name = get_the_terms( $post->ID, 'TAXONOMY_NAME' )[0]->name;
var_dump( $first_term_name );