From cbc6145c4118b7b4d97ad360869b8aaf6c712985 Mon Sep 17 00:00:00 2001
From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Jul 16 2024 16:18:36 +0000
Subject: Add support for building from a specific branch


For our nightly systemd build for the CentOS Hyperscale build it
would be very useful to download sources straight from git main on
github so let's allow defining the "branch" macro to do just that.

---

diff --git a/systemd.spec b/systemd.spec
index 8ce14eb..4fadd5f 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -57,7 +57,9 @@ License:        LGPL-2.1-or-later AND MIT AND GPL-2.0-or-later
 Summary:        System and Service Manager
 
 # download tarballs with "spectool -g systemd.spec"
-%if %{defined commit}
+%if %{defined branch}
+Source0:        https://github.com/systemd/systemd/archive/refs/heads/%{branch}.tar.gz
+%elif %{defined commit}
 Source0:        https://github.com/systemd/systemd/archive/%{commit}/%{name}-%{shortcommit}.tar.gz
 %else
 Source0:        https://github.com/systemd/systemd/archive/v%{version_no_tilde}/%{name}-%{version_no_tilde}.tar.gz
@@ -671,7 +673,13 @@ other libraries from systemd-libs. This package conflicts with the main systemd
 package and is meant for use in exitrds.
 
 %prep
-%autosetup -n %{?commit:%{name}-%{commit}}%{!?commit:%{name}-%{version_no_tilde}} -p1
+%if %{defined branch}
+%autosetup -n %{name}-%{branch}
+%elif %{defined commit}
+%autosetup -n %{name}-%{commit}
+%else
+%autosetup -n %{name}-%{version_no_tilde} -p1
+%endif
 
 %build
 %global ntpvendor %(source /etc/os-release; echo ${ID})