Error in upgrading ERPNext app to v15

while switching the branch of erpnext branch i get this error

any solution ?

INFO: Fetching upstream for erpnext
$ git remote set-branches upstream  '*'
$ git fetch --all --quiet
error: 7291 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
error: Could not fetch upstream
ERROR: git fetch --all --quiet
subprocess.CalledProcessError: Command 'git fetch --all --quiet' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/bin/bench", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.10/dist-packages/bench/cli.py", line 132, in cli
    bench_command()
  File "/usr/local/lib/python3.10/dist-packages/bench/commands/update.py", line 93, in switch_to_branch
    switch_to_branch(branch=branch, apps=list(apps), upgrade=upgrade)
  File "/usr/local/lib/python3.10/dist-packages/bench/utils/app.py", line 108, in switch_to_branch
    switch_branch(branch, apps=apps, bench_path=bench_path, upgrade=upgrade)
  File "/usr/local/lib/python3.10/dist-packages/bench/utils/app.py", line 69, in switch_branch
    exec_cmd(
  File "/usr/local/lib/python3.10/dist-packages/bench/utils/__init__.py", line 169, in exec_cmd
    raise CommandFailedError(cmd) from subprocess.CalledProcessError(return_code, cmd)
bench.exceptions.CommandFailedError: git fetch --all --quiet

when i am tring to clone it giving this error

Cloning into 'erpnext'...
remote: Enumerating objects: 559105, done.
remote: Counting objects: 100% (5424/5424), done.
remote: Compressing objects: 100% (2385/2385), done.
error: 5864 bytes of body are still expected9 MiB | 363.00 KiB/s 
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output