Adjust clone timeout error to suggest increasing timeout (#21769)
Adjust clone timeout error to suggest increasing timeout (#21769)

There are far too many error reports regarding timeouts from migrations.
We should adjust error report to suggest increasing this timeout.

Ref #20680

Signed-off-by: Andrew Thornton <6a547fdd28db89120bdd70d4af1f9ba672ccd43a@cantab.net>

go-gitea/gitea,go-gitea/gitea,go-gitea/gitea