keep a branch per tag/version

[kesar]

useful for gitmodules w foundry

[cygaar]

Good suggestion, I'm a bit surprised gitsubmodules don't support tags yet, but I'll put this on my todo list

[wiasliaw]

Foundry supports using tag, so doesnt need a branch per tag/version.

Example:

$ forge install OpenZeppelin/[email protected]  --no-commit

.gitmodules doesn't show the tag info, but git submodule status does.

$ git submodule status

 82e6f5376c15341629ca23098e0b32d303f44f02 lib/forge-std (v0.1.0-83-g82e6f53)
+8e0296096449d9b1cd7c5631e917330635244c37 lib/openzeppelin-contracts (v3.4.2)