git patch generator by branchname. First parameter is full path where work was done, second is just the name of the generated patch before the branch name

patchGenByBranch.bat

@echo off
setlocal
for /f usebackq %%c in (`git -C %1 rev-parse --abbrev-ref HEAD `) do @set _branchname_="%%c"
for /f usebackq %%c in (`git -C %1 show-ref --heads -s master`) do @set _branchcommit_="%%c"
for /f usebackq %%c in (`git -C %1 merge-base master %_branchname_%`) do @set _mastercommit_="%%c"
IF "%_branchcommit_%"=="%_mastercommit_%" (
    echo generating patch for %_branchname_%
    git -C %1 diff --relative --no-prefix --no-textconv --ignore-submodules --abbrev master..%_branchname_% '*.py' '*.xml' > %1\%2-%_branchname_%.patch
) ELSE (
    echo "first rebase master to branch %_branchname_% (CTRL+D in smartgit)"
    echo "or merge it (CTRL+M in smartgit, best choice to keep tree history)"
    echo "and then regenerate patch"
    echo "branch commit %_branchcommit_%"
    echo "master commit %_mastercommit_%"
    exit 1
)