sl doctor crashes with repository not found

[fahrradflucht]

I'm using a build from source on current HEAD (version 4.4.2_20240419-180803-h95896256) and ran sl doctor, because smartlog was warning me that I had too many commits and should run doctor to hide unrelated ones. However, that consistently leads to a crash:

Traceback

$ sl doctor
checking internal storage
** Sapling SCM (version 4.4.2_20240419-180803-h95896256) has crashed:
Traceback (most recent call last):
  File "static:sapling", line 86, in run
    dispatch.run(args, fin, fout, ferr, ctx, skipprehooks)
  File "static:sapling.dispatch", line 163, in run
    status = (dispatch(req) or 0) & 255
  File "static:sapling.dispatch", line 382, in dispatch
    ret = _runcatch(req)
  File "static:sapling.dispatch", line 566, in _runcatch
    return _callcatch(ui, req, _runcatchfunc)
  File "static:sapling.dispatch", line 575, in _callcatch
    return scmutil.callcatch(ui, req, func)
  File "static:sapling.scmutil", line 153, in callcatch
    return func()
  File "static:sapling.dispatch", line 553, in _runcatchfunc
    return _dispatch(req)
  File "static:sapling.dispatch", line 1105, in _dispatch
    ret = runcommand(
  File "static:sapling.ext.undo", line 131, in _runcommandwrapper
    return orig(lui, repo, cmd, fullargs, *args)
  File "static:sapling.ext.undo", line 120, in origunsetpid
    return _orig(*args, **opts)
  File "static:sapling.ext.journal", line 83, in runcommand
    return orig(lui, repo, cmd, fullargs, *args)
  File "static:sapling.ext.sparse", line 497, in _tracktelemetry
    res = runcommand(lui, repo, *args)
  File "static:sapling.ext.copytrace", line 177, in _runcommand
    return orig(lui, repo, cmd, fullargs, ui, *args, **kwargs)
  File "static:sapling.dispatch", line 788, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "static:sapling.dispatch", line 1156, in _runcommand
    return cmdfunc()
  File "static:sapling.dispatch", line 1104, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **strcmdopt)
  File "static:sapling.util", line 1373, in check
    return func(*args, **kwargs)
  File "static:sapling.commands.doctor", line 91, in doctor
    cl = openchangelog(ui, svfs)
  File "static:sapling.commands.doctor", line 249, in openchangelog
    repo = ChangelogRepo(ui, svfs)
  File "static:sapling.commands.doctor", line 607, in __init__
    ui.reloadconfigs(root)
  File "static:sapling.ui", line 259, in reloadconfigs
    self._uiconfig.reload(self, repopath)
  File "static:sapling.uiconfig", line 79, in reload
    self._rcfg.reload(repopath)
error.UncategorizedNativeError: repository /Users/fahrradflucht/Code/my-project/.git not found!

I couldn't really make anything out of this. This .git directory definitely exists.