i cant run any more commands after error occur

[credits-16]

brew config output

Updating files: 100% (2741/2741), done.
HEAD is now at 374adf7f1 Merge pull request #12868 from SMillerDev/chore/doc/add_service_block
error: Not a valid ref: refs/remotes/origin/master
fatal: ambiguous argument 'refs/remotes/origin/master': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

brew doctor output

nothing

Verification

• I ran brew update and am still able to reproduce my issue.
• I have resolved all warnings from brew doctor and that did not fix my problem.

What were you trying to do (and why)?

i tried to install homebrew for mtr and my terminal said it had an error so I typed $ brew doctor and % brew doctor and there was nothing I tried other command like $ brew config and it does nothing

What happened (include all command output)?

Updating files: 100% (2741/2741), done.
HEAD is now at 374adf7 Merge pull request #12868 from SMillerDev/chore/doc/add_service_block
error: Not a valid ref: refs/remotes/origin/master
fatal: ambiguous argument 'refs/remotes/origin/master': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git [...] -- [...]'

What did you expect to happen?

installing homebrew

Step-by-step reproduction instructions (by running brew commands)

i inputted /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

[carlocab]

This isn't a bug in brew itself, and is an issue with the installer. Please see related discussions at the discussions page.