As per the subject, we need to update the -a doc for the change in 'got
fetch' behaviour:

-----------------------------------------------
commit 503168c5866afbbe0243bcdddc2c0e769e71af05 (main)
from: Mark Jamsek <mark@jamsek.dev>
date: Fri Feb  3 04:40:09 2023 UTC
 
 fix missed doc update of new 'got fetch' behaviour
 
diff f1d971f3ed617e4e24f33119d2c35671178d860f 503168c5866afbbe0243bcdddc2c0e769e71af05
commit - f1d971f3ed617e4e24f33119d2c35671178d860f
commit + 503168c5866afbbe0243bcdddc2c0e769e71af05
blob - ff51dcada6ea9946aed98884cc5f0bdaa65a5164
blob + 2f2d51be710c9d1ff0291d1284b33f43eb85e145
--- got/got.1
+++ got/got.1
@@ -383,8 +383,10 @@ If this option is not specified, a branch resolved via
 reference namespace.
 This option can be enabled by default for specific repositories in
 .Xr got.conf 5 .
-If this option is not specified, a branch resolved via the remote
-repository's HEAD reference will be fetched.
+If this option is not specified, the work tree's current branch
+will be fetched if invoked within a work tree,
+otherwise a branch resolved via the remote repository's HEAD reference
+will be fetched.
 Cannot be used together with the
 .Fl b
 option.

-- 
Mark Jamsek <fnc.bsdbox.org>
GPG: F2FF 13DE 6A06 C471 CA80  E6E2 2930 DC66 86EE CF68