diff --git a/packit-update-sources.sh b/packit-update-sources.sh
index cbebc59..5875193 100755
--- a/packit-update-sources.sh
+++ b/packit-update-sources.sh
@@ -1,6 +1,8 @@
  git clone --depth 1 --branch master https://github.com/postgres/postgres.git
- cd postgres && git fetch --tags
- NEW_MINOR=$(cd postgres && git tag -l "REL_15_*" | sed -E "s/REL_15_([0-9]+)/\1/" | sort -n | tail -n 1)
+ pushd postgres
+ git fetch --tags
+ NEW_MINOR=$(git tag -l "REL_15_*" | sed -E "s/REL_15_([0-9]+)/\1/" | sort -n | tail -n 1)
+ popd
  pushd $PACKIT_DOWNSTREAM_REPO
  sed -i "s/\(%global prevversion %{prevmajorversion}\)\.[0-9]\+/\1.$NEW_MINOR/" $PACKIT_DOWNSTREAM_PACKAGE_NAME'
  popd