git grep bug replacing - with :

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What did you do before the bug happened? (Steps to reproduce your issue)
   Added 2 files to my repo with words in them
   text-file.txt
   text-file-file.txt

   I did a git grep for said words that exists in both, and used
argument `-l` to only
   show matching filename
   ```
   git grep -l ExtremelyInterestingWord
   ```

What did you expect to happen? (Expected behavior)
   I expected to get the following output
   ```
   text-file.txt
   text-file-file.txt
   ```

What happened instead? (Actual behavior)
   I get
   ```
   text:file.txt
   text:file-file.txt
   ```

What's different between what you expected and what actually happened?
   It seems that when using the argument `-l` the first `-` in a filename is
   replaced with a `:`. It also seems that it is just the first one as the
   second file keeps it's second occurence of `-`.

Anything else you want to add:

Please review the rest of the bug report below. You can delete any lines you don't wish to share.

[System Info] git version: git version 2.34.1 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh uname: Linux 6.5.0-35-generic #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2 x86_64 compiler info: gnuc: 11.4 libc info: glibc: 2.35 $SHELL (typically, interactive shell): /usr/bin/zsh