git: remove `--bare` flag from git commands #259

Job	Run time
build (no git)	1m 17s
test (linux-x86_64-gnu)	7m 9s
test (linux-aarch64-gnu)	8m 24s
nix flake (ubuntu-24.04)	6m 49s
test (macos-x86_64)	11m 32s
check (cargo-deny, advisories)	24s
check (clippy)	2m 38s
nix flake (ubuntu-24.04-arm)	7m 11s
test (macos-aarch64)	5m 38s
check (cargo-deny, bans)	24s
nix flake (macos-14)	8m 17s
test (windows-x86_64)	13m 53s
check (cargo-deny, licenses)	23s
check (codespell)	11s
check (cargo-deny, sources)	27s
check (mkdocs)	11s
check (doctests)	2m 37s
check (protos)	37s
check (latest mkdocs, optional)	11s
check (zizmor)	32s
check (rustfmt)	19s
	1h 19m 4s

Provide feedback