Arch linux makepkg error building slack-libpurple-git

slack-libpurple-git_error.log

==> Making package: slack-libpurple-git r369.6778b7c-1 (Tue 28 Mar 2023 08:26:42 AM UTC)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Updating slack-libpurple git repo...
From https://github.com/dylex/slack-libpurple
 - [deleted]         (none)     -> master
 - [deleted]         (none)     -> refs/pull/169/merge
remote: Enumerating objects: 12, done.
remote: Counting objects: 100% (12/12), done.
remote: Compressing objects: 100% (8/8), done.
remote: Total 12 (delta 4), reused 10 (delta 4), pack-reused 0
Unpacking objects: 100% (12/12), 6.54 KiB | 304.00 KiB/s, done.
 * [new branch]      finduserhack        -> finduserhack
 * [new branch]      main                -> main
 + 8a09a6d...3baf9a0 refs/pull/162/head  -> refs/pull/162/head  (forced update)
 + de16ff4...9aac785 refs/pull/162/merge -> refs/pull/162/merge  (forced update)
 * [new ref]         refs/pull/172/head  -> refs/pull/172/head
==> Validating source files with sha256sums...
    slack-libpurple ... Skipped
==> Extracting sources...
  -> Creating working copy of slack-libpurple git repo...
Cloning into 'slack-libpurple'...
done.
warning: remote HEAD refers to nonexistent ref, unable to checkout
==> Starting pkgver()...
fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: Needed a single revision
==> Updated version: slack-libpurple-git r.-1
==> Starting build()...
make: *** No targets specified and no makefile found.  Stop.
==> ERROR: A failure occurred in build().
    Aborting...