Migrate github.com URL to a gogs instance

gh2gogs.sh

#!/bin/bash
# Hacky one-shot github2gogs migration
#
# Needs minor modifications if you want to push to a user rather than an organization
# or if your gogs gitconfig doesn't have r/w ssh set up
#
#
# Also, create a token in Gogs->Profile->Settings->Application and set it
# using:
#  $ export GOGS_TOKEN=<insert token here>
#
# This will mirror the github repo locally, create an empty repo in the
# gogs instance under the organization "github" (which must already exist
# and be writable by your user) and then pushes the branches to gogs
#
# Some notes in-line if you need to modify
#
# - mzpqnxow
#
#
# As-is, the command:
#   $ gh2gogs https://github.com/bah/lol123
#
# Will do the following:
#   - clone the repo from github
#   - create a repo under the organization $GOGS_ORG ("github")
#   - sync the local github repo to the new gogs repo
#
# It's sloppy, you can fix it yourself :>
#
set -euo pipefail
echo $#
if [ "$#" -ne 1 ] && [ "$#" -ne 2 ]; then
  echo "Usage: $0 <github_repo_url> [repo_name]" >&2
  echo "Example: $0 [email protected]:alice/project.git project" >&2
  exit 1
fi

# Replace both with your gogs username if you want to push to
# your username instead of a gogs org (which must be created already)
# but also replace the create_repo_url below ...
declare GOGS_ENTITY=github
declare GH_REPO="$1"
declare REPO_NAME="${2:-$(basename "$GH_REPO")}"
# Replace with info specific to the gogs server
declare GOGS_HTTP_API=https://gogs.lan:12345/api/v1
declare GOGS=ssh://gogs.lan
declare GOGS_RW_URL="$GOGS/$GOGS_ENTITY/$REPO_NAME"

# Step 1: Create repo on Gogs via API
echo "Creating repository '$REPO_NAME' for org/user '$GOGS_ENTITY' on Gogs..."


# If you want to push to a user rather than an org:
# create_repo_url="$GOGS_HTTP_API/user/repos"
# To push to an org:
create_repo_url="$GOGS_HTTP_API/org/$GOGS_ENTITY/repos"
echo "Will create repo @ $create_repo_url ..."
curl -kvv -sf -X POST "$create_repo_url" \
  -H "Content-Type: application/json" \
  -H "Authorization: token $GOGS_TOKEN" \
  -d "{\"name\":\"$REPO_NAME\", \"private\":false, \"auto_init\":false}" || echo "Failed to create, it exists already or you need to change $create_repo_url !!"

declare TMP_DIR="$(mktemp -d)"
trap 'rm -rf "$TMP_DIR"' EXIT
cd "$TMP_DIR"

echo "Cloning from GitHub $GH_REPO"
git clone --mirror "$GH_REPO" repo.git
cd repo.git

echo "Pushing to Gogs ($GOGS_RW_URL) ..."
git push --mirror "$GOGS_RW_URL"
echo "Done migrating $GH_REPO ..."