Porch: error from rpkg edit

[liamfallon]

Original issue URL: kptdev/kpt#3694
Original issue user: https://github.com/johnbelamaric
Original issue created at: 2022-12-14T21:37:36Z
Original issue last updated at: 2022-12-14T21:41:23Z
Original issue body: ### Expected behavior
rpkg edit creates a new draft package

Actual behavior

ubuntu@nephio-poc-004:~$ kpt --kubeconfig ~/.kube/nephio.config alpha rpkg edit edge-1-03644cdb5e035f49d209641a1763704042546aa2 -n default --workspace v3
Error: Internal error occurred: error applying patch: conflict: fragment line does not match src line 
ubuntu@nephio-poc-004:~$ kpt --kubeconfig ~/.kube/nephio.config alpha rpkg edit edge-1-03644cdb5e035f49d209641a1763704042546aa2 -n default 
Error: --workspace is required to specify downstream workspaceName 
ubuntu@nephio-poc-004:~$

Information

ubuntu@nephio-poc-004:~$ kpt --kubeconfig ~/.kube/nephio.config alpha rpkg list
NAME                                                        PACKAGE                  WORKSPACENAME         REVISION   LATEST   LIFECYCLE   REPOSITORY
...snipped...
edge-1-03644cdb5e035f49d209641a1763704042546aa2             free5gc-operator         packagedeployment-1   v1         true     Published   edge-1
...snipped...
ubuntu@nephio-poc-004:~$ 

Note that this revision v1 from repo https://github.com/nephio-test/nephio-poc-004-edge-1

Steps to reproduce the behavior

Original issue comments:

[liamfallon]

Same root casuse as Same root cause as #469

[liamfallon]

Triaged
Triage Comment: The same issue happens in porchctl rpkg update