man page tweaks
diff --git a/got/got.1 b/got/got.1
index 6c2d08f..9aadbc5 100644
--- a/got/got.1
+++ b/got/got.1
@@ -72,11 +72,11 @@ are as follows:
Copy files from a repository into a new work tree.
If the
.Ar work tree path
-is not specified, either use the base name of the
+is not specified, either use the last component of
.Ar repository path ,
or if a
.Ar path prefix
-was specified use the base name of the
+was specified use the last component of
.Ar path prefix .
.Pp
The options for
@@ -86,7 +86,8 @@ are as follows:
.It Fl c Ar commit
Check out files from the specified
.Ar commit .
-By default, the HEAD commit is used.
+If this option is not specified, a commit resolved via the repository's HEAD
+reference will be used.
.It Fl p Ar path-prefix
Restrict the work tree to a subset of the repository's tree hierarchy.
Only files beneath the specified