Windows custom git commands

Question

Say I want a new git command, git new, that makes a new branch that is up to date with origin/master.

Is there a way I can make this script and have it available in all repositories on Windows from powershell?

edit: To clarify I want a git script not a powershell function. The only reason I mentioned powershell is because I don't use git bash.

Answer 1

You can use a git alias which uses git checkout:

git config --global alias.new 'checkout origin/master -b'

This would then be used as git new new_branch.

(Which is equivolent to git checkout origin/master -b new_branch

See the git docs for checkout. I tried the command and it worked, but when I looked at the docs, I didn't find a syntax that exactly matched my form. (Closest is git checkout [-q] [-f] [-m] [[-b|-B|--orphan] <new_branch>] [<start_point>])

Note: @axiac, I may have used the !git because it doesn't hurt, and I may have needed to do multiple commands to solve the problem, and didn't remove it when I was done.