Git commands for building generated files on another branch and pulling them in temporarily for a build

git-codegen-in-branch.bash

#!/bin/bash

# Save the current branch.
previous_branch=`git rev-parse --abbrev-ref HEAD`

# Switch to generated code branch and pull in any changes from the working branch.
git checkout generated-code
git merge --no-edit $previous_branch

# <Build generated files>
# Run whatever code gen commands here you need to.

# Commit all generated files.
git add --all
git commit -m "Generated code"

# Switch to the working branch and merge in generated files, but don't commit them.
git checkout $previous_branch
git merge --no-commit --no-ff generated-code

# <Build binary>
# Run whatever build commands here you need to.

# Discard generated files pulled in by the merge.
git merge --abort