diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index deb090557b1e48f10e5b5930fd14e0e380154313..68f9a62c77c6b85b86b9104625bd151a4901a575 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -146,8 +146,8 @@ jobs:
             env:
                 DOWNSTREAM_PROJECT: ${{ matrix.downstream_project }}
             run: |
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/ci-support.sh
-                . ./ci-support.sh
+                curl -L -O https://tiker.net/ci-support-v0
+                . ./ci-support-v0
 
                 # Use "special grudge" for kcv3 and branches targeting it.
                 if [[ "$DOWNSTREAM_PROJECT" = "grudge" ]] && [[ "$GITHUB_HEAD_REF" = "kernel_callables_v3-edit2" || "$GITHUB_BASE_REF" = "kernel_callables_v3-edit2" ]]; then
@@ -161,15 +161,16 @@ jobs:
                 if [[ "$DOWNSTREAM_PROJECT" = "pytential" ]] && [[ "$GITHUB_HEAD_REF" = "kernel_callables_v3-edit2" || "$GITHUB_BASE_REF" = "kernel_callables_v3-edit2" ]]; then
                   sed -i "/egg=sumpy/ c git+https://github.com/inducer/sumpy.git@loopy-callables#egg=sumpy" requirements.txt
                 fi
+                
+                transfer_requirements_git_urls ../requirements.txt ./requirements.txt
                 sed -i "/egg=loopy/ c git+file://$(readlink -f ..)#egg=loopy" requirements.txt
+                sed -i "/mpi4py/ d" requirements.txt
 
                 export CONDA_ENVIRONMENT=.test-conda-env-py3.yml
 
                 # Avoid slow or complicated tests in downstream projects
                 export PYTEST_ADDOPTS="-k 'not (slowtest or octave or mpi)'"
 
-                sed -i "/mpi4py/ d" requirements.txt
-
                 build_py_project_in_conda_env
                 test_py_project