MNT: Update test_tag

Run from anywhere, use meaningful commit/tag messages, do not push
automatically

scripts/test_tag

@@ -1,23 +1,23 @@
 #!/usr/bin/env bash
 
-# Execute this script from its containing directory to push to a new unique testing tag.
+# Execute this script from anywhere in the repository to push to a new unique testing tag.
 # This is a script which automates creation and pushing of unique tags for github actions.
 # It is particularly useful when debugging the upload hooks for pypi.
 # The workflow for that is to edit `.github/workflows/schemacode_ci.yml` and add a secondary branch name to the `on` section right after master.
 # This will allow you to keep pushing to the branch as if it were master and unix-time tagged archives being uploaded to test.pypi.
 
-VERSION_FILE="src/schema/SCHEMA_VERSION"
+EPOCH="$(date +%s)"
 
-pushd ..
-	export MY_BIDS_DATE="$(date +%s)"
-	REAL_VERSION=$(cat "${VERSION_FILE}")
-	DUMMY_VERSION="0.0.${MY_BIDS_DATE}-dev"
-	echo "${DUMMY_VERSION}" > "${VERSION_FILE}"
-	git commit -a -m "debug"
-	git tag -a "schema-$DUMMY_VERSION" -m "debug"
-	git push origin
-	git push origin "schema-$DUMMY_VERSION"
-	echo "${REAL_VERSION}" > "${VERSION_FILE}"
-popd
-unset MY_BIDS_DATE
+GIT_DIR=$( git rev-parse --git-dir )
+REPO_ROOT=$( ls -d ${GIT_DIR%.git} )
 
+VERSION_FILE="$REPO_ROOT/src/schema/SCHEMA_VERSION"
+
+REAL_VERSION=$(cat "${VERSION_FILE}")
+DUMMY_VERSION="0.0.${EPOCH}-dev"
+
+echo "${DUMMY_VERSION}" > "${VERSION_FILE}"
+git commit -a -m "Test release $DUMMY_VERSION"
+git tag -a "schema-$DUMMY_VERSION" -m "Test release $DUMMY_VERSION"
+
+echo "${REAL_VERSION}" > "${VERSION_FILE}"