Update bench not working

when i update bench, its giving error:

Cannot proceed with update: You have local changes in app “erpnext” that are not committed.

Here are your choices:

  1. Merge the erpnext app manually with “git pull” / “git pull --rebase” and fix conflicts.
  2. Temporarily remove your changes with “git stash” or discard them completely
    with “bench update --reset” or for individual repositries “git reset --hard”
  3. If your changes are helpful for others, send in a pull request via GitHub and
    wait for them to be merged in the core.

please help me

Generally happens if you make changes to erpnext doctypes. Try to avoid changing built in doctypes and use customize form instead wherever possible.

I have faced similar problems and have resolved it by using Can't Upgrade ERPNext 9.1.1 to latest version - #2 by Eduardo_Gomes

@aakvatech, thanks for your help, it solved bench update, but when i install erpnext i used my friend erpnext github. but his erpnext bench is not updated. now i want get update bench from eprnext github. how i can do this?, is there possible ?

thanks in advance