diff --git a/scripts/release/common.sh b/scripts/release/common.sh
index ce7f40ff9d024c..92c715919d40fd 100755
--- a/scripts/release/common.sh
+++ b/scripts/release/common.sh
@@ -41,6 +41,9 @@ function __git_commit_subject() {
 
 # Returns the branch name of the current git repository
 function git_get_branch() {
+  # Case 1 works when a release branch was checked out,
+  # wheras the second case works if we're in "detached HEAD" state,
+  # which can happen on CI.
   git symbolic-ref --short HEAD 2>/dev/null || git branch --remote --contains | cut -d "/" -f2
 }