fix(git): handle branch names with /

[miki725]

• [x] Followed the steps in the contributor's guide: https://crashoverride.com/docs/other/contributing#filing-the-pull-request
• [x] PR title uses semantic commit messages
• [x] Filled out the template to a useful degree
• [x] Updated CHANGELOG.md if necessary

Issue

chalk does not report COMMIT_ID for branches with / in them

Description

If the branch is "foo/bar", chalk incorrectly split the branch name and therefore was only attempting to find commit id for branch "foo" which is incorrect.

Testing

➜ make tests args="test_git.py::test_repo --logs -x"