usage

1. add a file 1.txt with lines 1-10

2. commit

3. create two branches branchTarget and branchSource

4. switch to branchTarget

5. rename file 1.txt to 2.txt

   optionally: edit line 1

6. commit

7. checkout branchSource

8. edit line 5

9. commit

10. edit line 8

11. commit

12. add branch branchSourceTemp on branchSource

13. git rebase branchTarget branchSourceTemp

    alternatively if not only a rename but also changes occurred:

    git rebase --strategy="recursive" --strategy-option="rename-threshold=25" branchTarget branchSourceTemp

14. git rebase --onto branchTarget branchSourceTemp~ branchSourceTemp

in branchSourceTemp the file 2.txt contains only the modification of line 8 (and the optionally change on line 1)