You can use VBA to paste your input in another cell.
First, define names on ranges as follows
- TargetRow: CELL A1
- TargetData: CELL A2:A6
- Rows: CELL F2:F6

Then, put the following VBA in under [your sheet]

Option Explicit
Private Sub Worksheet_Change(ByVal rng As Range)
If Not Intersect(rng, Range("TargetData")) Is Nothing Then
Dim rowStr As String: rowStr = Range("TargetRow").Value2
Dim l As Long: l = Range("Rows").Count
Dim i As Long
For i = 1 To l
If Range("Rows").Cells(i, 1).Value2 = rowStr Then
Dim n As Long: n = Range("TargetData").Count
Dim j As Long
For j = 1 To n
Range("Rows").Cells(1, 1).Offset(i - 1, j).Value2 = Range("TargetData").Cells(1, 1).Offset(j - 1, 0).Value2
Next
End If
Next
End If
End Sub
Worksheet_Change() is triggered if you make some changes on your sheet. Then check the change is done in TargetData range. Using "for" loop, find which row is to be updated.