Avoid using regex at all

nvchecker_source/git.py

@@ -1,7 +1,6 @@
 # MIT licensed
 # Copyright (c) 2020 Felix Yan <felixonmars@archlinux.org>, et al.
 
-import re
 from .cmd import run_cmd # type: ignore
 
 async def get_version(
@@ -10,6 +9,5 @@ async def get_version(
   git = conf['git']
   cmd = f"git ls-remote -t --refs {git}"
   data = await cache.get(cmd, run_cmd)
-  regex = "(?<=refs/tags/).*$"
-
-  return re.findall(regex, data, re.MULTILINE)
+  versions = list(map(lambda line: line.split("refs/tags/")[1], data.split("\n")))
+  return versions