ctrl-z ignored by git; creates blobs from non-existent repos

[Crls <kaploceh@xxxxxxxxx>]

Ctrl-Z is ignored by git; Git-clone injects blobs even with non-existent 
repos

Steps to reproduce 1- git clone github 
whateverrepo/whatevernonexistentrepo or 1- git clone gitlab 
whateverrepo/whatevernonexistentrepo 2= Git prompts for a username

3- Press Ctrl-Z to stop *git* from running either on the virtual 
console/tty *git* automatically creates blobs with directories and 
disregards

^Z altogether It goes ahead anyway and creates pleases. It looks as if 
^Z is not enough.

Expected: The same issue does not happen with other non-existent repos 
e.g., git clone git.zx2c4/ it returns the message of fatal repo not found

  According to console_codes (4) CAN (0x18, ^X) and SUB (0x1A, ^Z) 
abort escape sequences should be clear enough


git version 2.36.3