[rpms/tree-sitter] rawhide: Two small fixes for chain-build.sh (dedup + Pagure error check)

[Dainard, Samuel <sdainard@amazon.com>]

            A new commit has been pushed.

            Repo   : rpms/tree-sitter
            Branch : rawhide
            Commit : 91a158fab421d94a08c9b6cfd1b4c92c64ab4b76
            Author : Dainard, Samuel <sdainard@amazon.com>
            Date   : 2026-08-27T15:59:56+01:00
            Stats  : +3/-2 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/tree-sitter/c/91a158fab421d94a08c9b6cfd1b4c92c64ab4b76?branch=rawhide

            Log:
            Two small fixes for chain-build.sh (dedup + Pagure error check)

1. Dependent list isn't deduplicated. dnf repoquery --qf='%{source_name}\n'
prints one line per binary package, so a source package that ships several
binaries linking libtree-sitter shows up multiple times and gets
cloned/bumped/built repeatedly. Piping the grep through sort -u fixes it.

2. Pagure error-response check never fires. In if [[ $response == "{*" ]]
the whole pattern is quoted, so * is literal and it only matches the exact
string {*. A real error object like {"error":"..."} slips past and gets
treated as a PR URL. Quoting just the brace — "{"* — restores the intended
"starts with {" glob.

---
diff --git a/chain-build.sh b/chain-build.sh
index ae54fbe..a05aa14 100755
--- a/chain-build.sh
+++ b/chain-build.sh
@@ -160,7 +160,8 @@ mapfile -t packages < <(
         --releasever="${branch#f}" \
         --whatrequires='libtree-sitter.so.*' \
         --qf='%{source_name}\n' \
-        | grep -v '^tree-sitter$'
+        | grep -v '^tree-sitter$' \
+        | sort -u
 )
 
 # Create a new side tag (or re-use the existing one, if this script
@@ -256,7 +257,7 @@ Relates to https://bugzilla.redhat.com/show_bug.cgi?id=${bugs[0]}.
                 "https://src.fedoraproject.org/api/0/rpms/$package/pull-request/new" \
                 | jq '.full_url // .'
         )
-        if [[ $response == "{*" ]]; then
+        if [[ $response == "{"* ]]; then
             echo "Could not find pull request URL in Pagure response"
             echo "$response"
             exit 2