appview/repo: bump request timeout for fork creation

this requires a bare clone; which could take time depending on the size
of the repo.

Signed-off-by: oppiliappan <[e-mail]>

appview/repo/repo.go

···
 		}
 		defer rollback()
 
+		// TODO: this could coordinate better with the knot to recieve a clone status
 		client, err := rp.oauth.ServiceClient(
 			r,
 			oauth.WithService(targetKnot),
 			oauth.WithLxm(tangled.RepoCreateNSID),
 			oauth.WithDev(rp.config.Core.Dev),
+			oauth.WithTimeout(time.Second*20), // big repos take time to clone
 		)
 		if err != nil {
 			l.Error("could not create service client", "err", err)