diff --git a/.github/requirements-earliest.txt b/.github/requirements-earliest.txt
index 0701f0b..f2f8b01 100644
--- a/.github/requirements-earliest.txt
+++ b/.github/requirements-earliest.txt
@@ -1 +1 @@
-mercurial==6.1.4
+mercurial==6.1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6d82594..d7699ef 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,16 +26,18 @@ jobs:
           cache: 'pip'
           cache-dependency-path: '**/requirements-earliest.txt'
 
-      - name: Report selected version
-        run: echo '${{ steps.earliest.outputs.python-version }}'
-
       - name: Install dependencies
         run: |
             python -m pip install --upgrade pip
             pip install -r .github/requirements-earliest.txt
 
-      - name: Look for hg
-        run: hg --version
+      - name: Report selected versions
+        run: |
+          echo Selected '${{ steps.earliest.outputs.python-version }}'
+          python --version
+          python3 --version
+          hg --version
+          ./hg-fast-export.sh -h
 
       - name: Run tests on earliest supported Python version
         run: make -C t
@@ -58,19 +60,20 @@ jobs:
           cache: 'pip'
           cache-dependency-path: '**/requirements-latest.txt'
 
-      - name: Report selected version
-        run: echo '${{ steps.latest.outputs.python-version }}'
-
       - name: Install dependencies
         run: |
             python -m pip install --upgrade pip
             pip install -r .github/requirements-latest.txt
 
-      - name: Look for hg
-        run: hg --version
+      - name: Report selected version
+        run: |
+          echo Selected '${{ steps.latest.outputs.python-version }}'
+          echo python --version
+          hg --version
+          ./hg-fast-export.sh -h
 
       - name: Run tests on 3.x
-        run: make -C t TEST_OPTS="--debug --verbose"
+        run: make -C t
 
   code-quality:
     name: Run code quality checks
diff --git a/hg-fast-export.sh b/hg-fast-export.sh
index fd0ff53..b70792a 100755
--- a/hg-fast-export.sh
+++ b/hg-fast-export.sh
@@ -29,7 +29,7 @@ GFI_OPTS=""
 
 if [ -z "${PYTHON}" ]; then
     # $PYTHON is not set, so we try to find a working python with mercurial:
-    for python_cmd in python2 python python3; do
+    for python_cmd in python3 python; do
         if command -v $python_cmd > /dev/null; then
             $python_cmd -c 'from mercurial.scmutil import revsymbol' 2> /dev/null
             if [ $? -eq 0 ]; then
@@ -45,6 +45,10 @@ if [ -z "${PYTHON}" ]; then
     exit 1
 fi
 
+echo "Will use python ${PYTHON}"
+
+${PYTHON} --version
+
 USAGE="[--quiet] [-r <repo>] [--force] [--ignore-unnamed-heads] [-m <max>] [-s] [--hgtags] [-A <file>] [-B <file>] [-T <file>] [-M <name>] [-o <name>] [--hg-hash] [-e <encoding>]"
 LONG_USAGE="Import hg repository <repo> up to either tip or <max>
 If <repo> is omitted, use last hg repository as obtained from state file,