diff --git a/test/runtests.jl b/test/runtests.jl
index 0ca50347..b2aca6f0 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -36,17 +36,20 @@ template_options = Dict(
       @info "git commands"
       run(`git status`)
       run(`git diff`)
+      if get(ENV, "CI", "nothing") == "true"
+        run(`git reset --hard HEAD`)
+      end
 
       template_path = joinpath(@__DIR__, "..")
 
       cd(tmpdir1) do
-        COPIERTemplate.generate("."; data = template_options)
+        COPIERTemplate.generate("."; data = template_options, vcs_ref = "HEAD")
       end
 
       bash_args = vcat([["-d"; "$k=$v"] for (k, v) in template_options]...)
 
       cd(tmpdir2) do
-        run(`copier copy $bash_args $template_path .`)
+        run(`copier copy --vcs-ref HEAD $bash_args $template_path .`)
       end
 
       ignore(line) = startswith("_commit")(line) || startswith("_src_path")(line)