diff --git a/git-flow-release b/git-flow-release
index 2d81ed6..cb95bd4 100644
--- a/git-flow-release
+++ b/git-flow-release
@@ -136,7 +136,7 @@
 }
 
 require_base_is_on_develop() {
-	if ! git branch --no-color --contains "$BASE" 2>/dev/null \
+	if ! git_do branch --no-color --contains "$BASE" 2>/dev/null \
 			| sed 's/[* ] //g' \
 	  		| grep -q "^$DEVELOP_BRANCH\$"; then
 		die "fatal: Given base '$BASE' is not a valid commit on '$DEVELOP_BRANCH'."
@@ -164,14 +164,14 @@
 	require_branch_absent "$BRANCH"
 	require_tag_absent "$VERSION_PREFIX$VERSION"
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
 	fi
 	if has "$ORIGIN/$DEVELOP_BRANCH" $(git_remote_branches); then
 		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
 	fi
 
 	# create branch
-	git checkout -b "$BRANCH" "$BASE"
+	git_do checkout -b "$BRANCH" "$BASE"
 
 	echo
 	echo "Summary of actions:"
@@ -210,9 +210,9 @@
 	require_branch "$BRANCH"
 	require_clean_working_tree
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
 		  die "Could not fetch $MASTER_BRANCH from $ORIGIN."
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
 		  die "Could not fetch $DEVELOP_BRANCH from $ORIGIN."
 	fi
 	if has "$ORIGIN/$MASTER_BRANCH" $(git_remote_branches); then
@@ -226,16 +226,16 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into master was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH"; then
-		git checkout "$MASTER_BRANCH" || \
+		git_do checkout "$MASTER_BRANCH" || \
 		  die "Could not check out $MASTER_BRANCH."
 		if noflag squash; then
-			git merge --no-ff "$BRANCH" || \
+			git_do merge --no-ff "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
 		else
-			git merge --squash "$BRANCH" || \
+			git_do merge --squash "$BRANCH" || \
 				die "There were merge conflicts."
-			git commit
+			git_do commit
 		fi
 	fi
 
@@ -250,7 +250,7 @@
 			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
 			[ "$FLAGS_message" != "" ] && opts="$opts -m '$FLAGS_message'"
 			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
-			eval git tag $opts "$tagname" "$BRANCH" || \
+			eval git_do tag $opts "$tagname" "$BRANCH" || \
 			die "Tagging failed. Please run finish again to retry."
 		fi
 	fi
@@ -259,41 +259,41 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into develop was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$DEVELOP_BRANCH"; then
-		git checkout "$DEVELOP_BRANCH" || \
+		git_do checkout "$DEVELOP_BRANCH" || \
 		  die "Could not check out $DEVELOP_BRANCH."
 
 		# TODO: Actually, accounting for 'git describe' pays, so we should
 		# ideally git merge --no-ff $tagname here, instead!
 		if noflag squash; then
-			git merge --no-ff "$BRANCH" || \
+			git_do merge --no-ff "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
 		else
-			git merge --squash "$BRANCH" || \
+			git_do merge --squash "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
-			git commit
+			git_do commit
 		fi
 	fi
 
 	# delete branch
 	if noflag keep; then
 		if [ "$BRANCH" = "$(git_current_branch)" ]; then
-			git checkout "$MASTER_BRANCH"
+			git_do checkout "$MASTER_BRANCH"
 		fi
-		git branch -d "$BRANCH"
+		git_do branch -d "$BRANCH"
 	fi
 
 	if flag push; then
-		git push "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do push "$ORIGIN" "$DEVELOP_BRANCH" || \
 			die "Could not push to $DEVELOP_BRANCH from $ORIGIN."
-		git push "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do push "$ORIGIN" "$MASTER_BRANCH" || \
 			die "Could not push to $MASTER_BRANCH from $ORIGIN."
 		if noflag notag; then
-			git push --tags "$ORIGIN" || \
+			git_do push --tags "$ORIGIN" || \
 			  die "Could not push tags to $ORIGIN."
 		fi
-		git push "$ORIGIN" :"$BRANCH" || \
+		git_do push "$ORIGIN" :"$BRANCH" || \
 			die "Could not delete the remote $BRANCH in $ORIGIN."
 	fi
 
@@ -324,17 +324,17 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch_absent "$ORIGIN/$BRANCH"
 
 	# create remote branch
-	git push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
+	git_do fetch -q "$ORIGIN"
 
 	# configure remote tracking
-	git config "branch.$BRANCH.remote" "$ORIGIN"
-	git config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
-	git checkout "$BRANCH"
+	git_do config "branch.$BRANCH.remote" "$ORIGIN"
+	git_do config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
+	git_do checkout "$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -351,11 +351,11 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch_absent "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch "$ORIGIN/$BRANCH"
 
 	# create tracking branch
-	git checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
+	git_do checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
 
 	echo
 	echo "Summary of actions:"