Mirror and tag .NET source build releases

mirror-and-tag.sh

#!/bin/bash

set -euxo pipefail
RELEASE_CHANNEL="7.0"
RUNTIME_VERSION="7.0.X"
SDK_VERSION="7.0.1XX"

vmr_path="vmr"
dnceng_url="valid git url"
destination_url="valid git url"

branch_version=$(echo ${SDK_VERSION} | sed 's/..$/xx/')
branch_to_mirror="release/${branch_version}" # e.g. release/6.0.1xx

rm -rf "${vmr_path}"
git init "${vmr_path}"

tag-head () {
    local message="Source-build ${RUNTIME_VERSION} runtime and ${SDK_VERSION} SDK"
    git tag -s "$1" HEAD -m "${message}"
}

pushd "${vmr_path}"
    git remote add dnceng "${dnceng_url}"
    git fetch dnceng "${branch_to_mirror}"
    git checkout "${branch_to_mirror}"

    git remote add external "${destination_url}"
    git fetch external "${branch_to_mirror}"

    tag_name="v${SDK_VERSION}-SDK"
    tag-head "${tag_name}"

    git push external "${branch_to_mirror}"
    git push external "${tag_name}"
popd