NCS 3.0.2 Windows: west update shows all files as modified

After a fresh installation of NCS 3.0.2 SDK and toolchain via the VScode extension, all west modules are reporting modifications:

PS C:\ncs\v3.0.2\zephyr> west status
=== status of manifest (nrf):
HEAD detached at v3.0.2
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: applications/serial_lte_modem/scripts/slm_start_ppp.sh
modified: applications/serial_lte_modem/scripts/slm_stop_ppp.sh
....

The modifications are related to the file modes:

PS C:\ncs\v3.0.2\zephyr> git diff
diff --git a/arch/x86/gen_gdt.py b/arch/x86/gen_gdt.py
old mode 100755
new mode 100644
diff --git a/arch/x86/gen_idt.py b/arch/x86/gen_idt.py
old mode 100755
new mode 100644

Is this a git checkout configuration problem?

BR,

Markus

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