warn people that GOT_AUTHOR should contain an email address
diff --git a/got/got.1 b/got/got.1
index 1c0a14e..a6c2e61 100644
--- a/got/got.1
+++ b/got/got.1
@@ -1080,7 +1080,13 @@ The author's name and email address for
and
.Cm got import ,
for example:
-.An Flan Hacker Aq Mt flan_hacker@openbsd.org
+.An Flan Hacker Aq Mt flan_hacker@openbsd.org .
+.Xr git 1
+may fail to parse commits created with
+.Nm
+if the
+.Ev GOT_AUTHOR
+environment variable does not contain an email address.
.It Ev VISUAL, Ev EDITOR
The editor spawned by
.Cm got commit .