refactor: harmonize git utils function names

lib/get-last-release.js

@@ -2,7 +2,7 @@ const {escapeRegExp, template} = require('lodash');
 const semver = require('semver');
 const pLocate = require('p-locate');
 const debug = require('debug')('semantic-release:get-last-release');
-const {gitTags, isRefInHistory, gitTagHead} = require('./git');
+const {getTags, isRefInHistory, getTagHead} = require('./git');
 
 /**
  * Last release.
@@ -30,7 +30,7 @@ module.exports = async ({cwd, env, options: {tagFormat}, logger}) => {
   // The `tagFormat` is compiled with space as the `version` as it's an invalid tag character,
   // so it's guaranteed to no be present in the `tagFormat`.
   const tagRegexp = `^${escapeRegExp(template(tagFormat)({version: ' '})).replace(' ', '(.+)')}`;
-  const tags = (await gitTags({cwd, env}))
+  const tags = (await getTags({cwd, env}))
     .map(tag => ({gitTag: tag, version: (tag.match(tagRegexp) || new Array(2))[1]}))
     .filter(
       tag => tag.version && semver.valid(semver.clean(tag.version)) && !semver.prerelease(semver.clean(tag.version))
@@ -43,7 +43,7 @@ module.exports = async ({cwd, env, options: {tagFormat}, logger}) => {
 
   if (tag) {
     logger.log(`Found git tag ${tag.gitTag} associated with version ${tag.version}`);
-    return {gitHead: await gitTagHead(tag.gitTag, {cwd, env}), ...tag};
+    return {gitHead: await getTagHead(tag.gitTag, {cwd, env}), ...tag};
   }
 
   logger.log('No git tag version found');