[rubygems/rubygems] Fix git source lockfile unstability

We have some flags that limit running git commit commands under certain
situations, for example, when running under `--local`. However, those
should only affect remote git operations, not local read-only operations
like `git --version`, or `git rev-parse --abbrev-ref HEAD`.

This commit refactors things to achieve that.

By doing this, the `#to_s` representation of a source is more
consistent, since we don't get any errors when reading the checked out
branch, and we avoid some flip-flop lockfile issues.

https://github.com/rubygems/rubygems/commit/4a529fce81

0 files changed, 0 insertions, 0 deletions