diff --git a/goconserver/mockbuild.pl b/goconserver/mockbuild.pl
index 9e586ea..e1889a7 100755
--- a/goconserver/mockbuild.pl
+++ b/goconserver/mockbuild.pl
@@ -43,7 +43,7 @@ for my $bin (qw(go git rpmbuild rpm)) {
 my $arch = capture('uname -m');
 if (!$mock_cfg) {
     my $os_id = capture(q{bash -lc 'source /etc/os-release; echo $ID'});
-    $mock_cfg = "${os_id}+epel-10-${arch}";
+    $mock_cfg = resolve_mock_cfg($os_id, '10', $arch);
 }
 
 my ($rel) = $mock_cfg =~ /-(\d+)-/;
@@ -298,3 +298,17 @@ sub write_file {
     print $fh $content;
     close $fh;
 }
+
+sub resolve_mock_cfg {
+    my ($os_id, $rel, $arch) = @_;
+    my %short_forms = (almalinux => 'alma', rocky => 'rocky');
+    my $candidate = "${os_id}+epel-${rel}-${arch}";
+    my $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+    return $candidate if $rc == 0;
+    if (exists $short_forms{$os_id}) {
+        $candidate = "$short_forms{$os_id}+epel-${rel}-${arch}";
+        $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+        return $candidate if $rc == 0;
+    }
+    return "${os_id}+epel-${rel}-${arch}";
+}
diff --git a/ipmitool/mockbuild.pl b/ipmitool/mockbuild.pl
index 262d653..3f377b9 100755
--- a/ipmitool/mockbuild.pl
+++ b/ipmitool/mockbuild.pl
@@ -51,7 +51,7 @@ my $source_path = "$pkg_dir/$source_file";
 my $arch = capture('uname -m');
 if (!$mock_cfg) {
     my $os_id = capture(q{bash -lc 'source /etc/os-release; echo $ID'});
-    $mock_cfg = "${os_id}+epel-10-${arch}";
+    $mock_cfg = resolve_mock_cfg($os_id, '10', $arch);
 }
 my $mock_uniqueext_opt = $mock_uniqueext ne ''
     ? ' --uniqueext ' . sh_quote($mock_uniqueext)
@@ -354,3 +354,17 @@ sub slurp {
     close $fh;
     return $content;
 }
+
+sub resolve_mock_cfg {
+    my ($os_id, $rel, $arch) = @_;
+    my %short_forms = (almalinux => 'alma', rocky => 'rocky');
+    my $candidate = "${os_id}+epel-${rel}-${arch}";
+    my $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+    return $candidate if $rc == 0;
+    if (exists $short_forms{$os_id}) {
+        $candidate = "$short_forms{$os_id}+epel-${rel}-${arch}";
+        $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+        return $candidate if $rc == 0;
+    }
+    return "${os_id}+epel-${rel}-${arch}";
+}
diff --git a/mockbuild-all.pl b/mockbuild-all.pl
index 755a855..e168220 100755
--- a/mockbuild-all.pl
+++ b/mockbuild-all.pl
@@ -69,7 +69,7 @@ die "Could not resolve major release from VERSION_ID='$version_id' in /etc/os-re
     if !defined($rel) || $rel eq '';
 
 if (!$target) {
-    $target = "${os_id}+epel-${rel}-${arch}";
+    $target = resolve_mock_cfg($os_id, $rel, $arch);
 }
 for my $bin (qw(perl uname createrepo tar find rpm)) {
     require_command($bin);
@@ -622,6 +622,30 @@ sub collect_srpms {
     return ($copied, $skipped_non_src, $missing_roots);
 }
 
+sub resolve_mock_cfg {
+    my ($os_id, $rel, $arch) = @_;
+    my %short_forms = (
+        almalinux      => 'alma',
+        'centos-stream' => 'centos-stream',
+        rocky          => 'rocky',
+    );
+    my $candidate = "${os_id}+epel-${rel}-${arch}";
+    my $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+    if ($rc == 0) {
+        return $candidate;
+    }
+    if (exists $short_forms{$os_id}) {
+        my $short = $short_forms{$os_id};
+        $candidate = "${short}+epel-${rel}-${arch}";
+        $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+        if ($rc == 0) {
+            print "Mock config resolved (short form): $candidate\n";
+            return $candidate;
+        }
+    }
+    die "Could not find mock config for ${os_id}+epel-${rel}-${arch}\n";
+}
+
 sub build_mock_uniqueext {
     my ($run, $seq, $label) = @_;
 
diff --git a/xnba/mockbuild.pl b/xnba/mockbuild.pl
index 6ca2336..bda758d 100755
--- a/xnba/mockbuild.pl
+++ b/xnba/mockbuild.pl
@@ -43,7 +43,7 @@ for my $bin (qw(rpmbuild rpm tar)) {
 my $arch = capture('uname -m');
 if (!$mock_cfg) {
     my $os_id = capture(q{bash -lc 'source /etc/os-release; echo $ID'});
-    $mock_cfg = "${os_id}+epel-10-${arch}";
+    $mock_cfg = resolve_mock_cfg($os_id, '10', $arch);
 }
 
 print_step("Configuration");
@@ -186,3 +186,17 @@ sub basename {
     $path =~ s{.*/}{};
     return $path;
 }
+
+sub resolve_mock_cfg {
+    my ($os_id, $rel, $arch) = @_;
+    my %short_forms = (almalinux => 'alma', rocky => 'rocky');
+    my $candidate = "${os_id}+epel-${rel}-${arch}";
+    my $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+    return $candidate if $rc == 0;
+    if (exists $short_forms{$os_id}) {
+        $candidate = "$short_forms{$os_id}+epel-${rel}-${arch}";
+        $rc = system("mock -r " . sh_quote($candidate) . " --print-root-path >/dev/null 2>&1");
+        return $candidate if $rc == 0;
+    }
+    return "${os_id}+epel-${rel}-${arch}";
+}