diff --git a/0001-Add-SourceLicense-tag-to-spec-syntax.patch b/0001-Add-SourceLicense-tag-to-spec-syntax.patch
new file mode 100644
index 0000000..0f48138
--- /dev/null
+++ b/0001-Add-SourceLicense-tag-to-spec-syntax.patch
@@ -0,0 +1,124 @@
+From 1dc9372821487ccace23ff1ae9cba6b30f02c91c Mon Sep 17 00:00:00 2001
+From: Florian Festi <ffesti@redhat.com>
+Date: Tue, 5 Jul 2022 16:34:08 +0200
+Subject: [PATCH] Add SourceLicense tag to spec syntax
+
+to set a separate license to the source RPM. This can be useful if the
+sources have code under additional licenses that do not end up in the
+binary packeges.
+
+Resolves: #2079
+
+Note on the backport:  The spec document on this branch is ancient and
+doesn't even contain the License tag's description so this backport
+leaves the documentation part out.
+
+(backported from commit 9ed9d3fce34bc3c8121989e0cf263528e7e68756)
+---
+ build/parsePreamble.c       |  6 ++++++
+ lib/rpmtag.h                |  3 +++
+ tests/data/SPECS/foo.spec   |  1 +
+ tests/data/SPECS/hello.spec |  1 +
+ tests/rpmbuild.at           | 11 +++++++++++
+ tests/rpmspec.at            |  1 +
+ 6 files changed, 23 insertions(+)
+
+diff --git a/build/parsePreamble.c b/build/parsePreamble.c
+index e7d6d8752..bd07ecdf0 100644
+--- a/build/parsePreamble.c
++++ b/build/parsePreamble.c
+@@ -831,6 +831,11 @@ static rpmRC handlePreambleTag(rpmSpec spec, Package pkg, rpmTagVal tag,
+ 	if (addLangTag(spec, pkg->header, tag, field, lang))
+ 	    goto exit;
+ 	break;
++    case RPMTAG_SOURCELICENSE:
++	if (addLangTag(spec, spec->sourcePackage->header,
++		       RPMTAG_LICENSE, field, lang))
++	    goto exit;
++	break;
+     case RPMTAG_BUILDROOT:
+ 	/* just silently ignore BuildRoot */
+ 	break;
+@@ -1012,6 +1017,7 @@ static struct PreambleRec_s const preambleList[] = {
+     {RPMTAG_EPOCH,		0, 0, 1, LEN_AND_STR("epoch")},
+     {RPMTAG_SUMMARY,		1, 0, 1, LEN_AND_STR("summary")},
+     {RPMTAG_LICENSE,		0, 0, 1, LEN_AND_STR("license")},
++    {RPMTAG_SOURCELICENSE,	0, 0, 1, LEN_AND_STR("sourcelicense")},
+     {RPMTAG_DISTRIBUTION,	0, 0, 1, LEN_AND_STR("distribution")},
+     {RPMTAG_DISTURL,		0, 0, 1, LEN_AND_STR("disturl")},
+     {RPMTAG_VENDOR,		0, 0, 1, LEN_AND_STR("vendor")},
+diff --git a/lib/rpmtag.h b/lib/rpmtag.h
+index 7d1943835..1fd829118 100644
+--- a/lib/rpmtag.h
++++ b/lib/rpmtag.h
+@@ -375,6 +375,9 @@ typedef enum rpmTag_e {
+     RPMTAG_MODULARITYLABEL	= 5096, /* s */
+     RPMTAG_PAYLOADDIGESTALT	= 5097, /* s[] */
+ 
++    /* Backports */
++    RPMTAG_SOURCELICENSE	= 5102, /* internal */
++
+     RPMTAG_FIRSTFREE_TAG	/*!< internal */
+ } rpmTag;
+ 
+diff --git a/tests/data/SPECS/foo.spec b/tests/data/SPECS/foo.spec
+index 859e98142..9b1087094 100644
+--- a/tests/data/SPECS/foo.spec
++++ b/tests/data/SPECS/foo.spec
+@@ -8,6 +8,7 @@ Source: hello-2.0.tar.gz
+ Patch1: hello-1.0-modernize.patch
+ Group: Testing
+ License: GPLv2+
++SourceLicense: GPL, ASL 1.0
+ BuildArch: noarch
+ 
+ %description
+diff --git a/tests/data/SPECS/hello.spec b/tests/data/SPECS/hello.spec
+index 5bc9cfaf7..4b9053aca 100644
+--- a/tests/data/SPECS/hello.spec
++++ b/tests/data/SPECS/hello.spec
+@@ -4,6 +4,7 @@ Version: 1.0
+ Release: 1
+ Group: Utilities
+ License: GPL
++SourceLicense: GPL, ASL 1.0
+ Distribution: RPM test suite.
+ Vendor: Red Hat Software
+ Packager: Red Hat Software <bugs@redhat.com>
+diff --git a/tests/rpmbuild.at b/tests/rpmbuild.at
+index bff65303b..7680f1502 100644
+--- a/tests/rpmbuild.at
++++ b/tests/rpmbuild.at
+@@ -31,6 +31,17 @@ run rpmbuild \
+ [0],
+ [ignore],
+ [ignore])
++
++AT_CHECK([
++
++runroot rpm -qp --qf "%{license}\n" /build/SRPMS/hello-1.0-1.src.rpm
++runroot rpm -qp --qf "%{license}\n" /build/RPMS/*/hello-1.0-1.*.rpm
++],
++[0],
++[GPL, ASL 1.0
++GPL
++],
++[])
+ AT_CLEANUP
+ 
+ AT_SETUP([rpmbuild -ba autosetup])
+diff --git a/tests/rpmspec.at b/tests/rpmspec.at
+index 2b11201db..c898ee654 100644
+--- a/tests/rpmspec.at
++++ b/tests/rpmspec.at
+@@ -243,6 +243,7 @@ Source: hello-2.0.tar.gz
+ Patch1: hello-1.0-modernize.patch
+ Group: Testing
+ License: GPLv2+
++SourceLicense: GPL, ASL 1.0
+ BuildArch: noarch
+ 
+ %description
+-- 
+2.45.2
+
diff --git a/rpm.spec b/rpm.spec
index 8a52d3c..dcedae4 100644
--- a/rpm.spec
+++ b/rpm.spec
@@ -112,6 +112,7 @@ Patch143: 0001-Don-t-segfault-on-missing-priority-tag.patch
 Patch144: 0001-Use-unsigned-integers-for-buildtime-too-for-Y2K38-sa.patch
 Patch145: 0001-Fix-potential-use-of-uninitialized-pipe-array.patch
 Patch146: 0001-Fix-potential-use-of-uninitialized-pgp-struct.patch
+Patch147: 0001-Add-SourceLicense-tag-to-spec-syntax.patch
 
 # These are not yet upstream
 Patch906: rpm-4.7.1-geode-i686.patch
@@ -666,6 +667,7 @@ fi
 - Fix potential use of uninitialized pipe array (RHEL-22604)
 - Fix potential use of uninitialized pgp struct (RHEL-22605)
 - Don't confuse OpenScanHub with false array overrun (RHEL-22607)
+- Add SourceLicense tag to spec syntax (RHEL-28798)
 
 * Mon Jun 03 2024 Michal Domonkos <mdomonko@redhat.com> - 4.16.1.3-30
 - Don't segfault on missing priority tag (RHEL-35249)