diff --git a/dist/index.js b/dist/index.js
index eed174c96..2fc32bb5c 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -129086,8 +129086,14 @@ const findReleases = async ({
 
   log({ context, message: `Found ${releases.length} releases` })
 
+  // `refs/heads/branch` and `branch` are the same thing in this context
+  const headRefRegex = /^refs\/heads\//
+  const targetCommitishName = targetCommitish.replace(headRefRegex, '')
   const filteredReleases = filterByCommitish
-    ? releases.filter((r) => targetCommitish.match(`/${r.target_commitish}$`))
+    ? releases.filter(
+        (r) =>
+          targetCommitishName === r.target_commitish.replace(headRefRegex, '')
+      )
     : releases
   const sortedPublishedReleases = sortReleases(
     filteredReleases.filter((r) => !r.draft)
diff --git a/lib/releases.js b/lib/releases.js
index 009c2747d..2881311cc 100644
--- a/lib/releases.js
+++ b/lib/releases.js
@@ -43,8 +43,14 @@ const findReleases = async ({
 
   log({ context, message: `Found ${releases.length} releases` })
 
+  // `refs/heads/branch` and `branch` are the same thing in this context
+  const headRefRegex = /^refs\/heads\//
+  const targetCommitishName = targetCommitish.replace(headRefRegex, '')
   const filteredReleases = filterByCommitish
-    ? releases.filter((r) => targetCommitish.match(`/${r.target_commitish}$`))
+    ? releases.filter(
+        (r) =>
+          targetCommitishName === r.target_commitish.replace(headRefRegex, '')
+      )
     : releases
   const sortedPublishedReleases = sortReleases(
     filteredReleases.filter((r) => !r.draft)