fix: add sha prefix to versioning

Author: CallMeLeopoldo

src/git-version.cr

@@ -74,7 +74,8 @@ module GitVersion
 
     def current_commit_hash : String
       cmd = "git rev-parse --verify HEAD --short"
-      return (exec cmd)[0].rjust(7, '0')
+      sha = (exec cmd)[0].rjust(7, '0')
+      return "sha" + sha
     end
 
     def commits_distance(tag : String | Nil)