diff --git a/build/pack.c b/build/pack.c
index d0b081ed27..caab5b8566 100644
--- a/build/pack.c
+++ b/build/pack.c
@@ -152,54 +152,47 @@ static rpmRC addFileToTag(rpmSpec spec, const char * file,
     return rc;
 }
 
-static rpm_time_t * getBuildTime(void)
+static rpm_time_t getBuildTime(void)
 {
-    static rpm_time_t buildTime[1];
+    rpm_time_t buildTime = 0;
     char *srcdate;
     time_t epoch;
     char *endptr;
 
-    if (buildTime[0] == 0) {
-        srcdate = getenv("SOURCE_DATE_EPOCH");
-        if (srcdate) {
-            errno = 0;
-            epoch = strtol(srcdate, &endptr, 10);
-            if (srcdate == endptr || *endptr || errno != 0)
-                rpmlog(RPMLOG_ERR, _("unable to parse SOURCE_DATE_EPOCH\n"));
-            else
-                buildTime[0] = (int32_t) epoch;
-        } else
-            buildTime[0] = (int32_t) time(NULL);
-    }
+    srcdate = getenv("SOURCE_DATE_EPOCH");
+    if (srcdate) {
+        errno = 0;
+        epoch = strtol(srcdate, &endptr, 10);
+        if (srcdate == endptr || *endptr || errno != 0)
+            rpmlog(RPMLOG_ERR, _("unable to parse SOURCE_DATE_EPOCH\n"));
+        else
+            buildTime = (int32_t) epoch;
+    } else
+        buildTime = (int32_t) time(NULL);
 
     return buildTime;
 }
 
-static const char * buildHost(void)
+static char * buildHost(void)
 {
-    static char hostname[1024];
-    static int oneshot = 0;
+    char* hostname;
     struct hostent *hbn;
     char *bhMacro;
 
-    if (! oneshot) {
-        bhMacro = rpmExpand("%{?_buildhost}", NULL);
-        if (strcmp(bhMacro, "") != 0 && strlen(bhMacro) < 1024) {
-            strcpy(hostname, bhMacro);
-        } else {
-            if (strcmp(bhMacro, "") != 0)
-                rpmlog(RPMLOG_WARNING, _("The _buildhost macro is too long\n"));
-            (void) gethostname(hostname, sizeof(hostname));
-            hbn = gethostbyname(hostname);
-            if (hbn)
-                strcpy(hostname, hbn->h_name);
-            else
-                rpmlog(RPMLOG_WARNING,
-                        _("Could not canonicalize hostname: %s\n"), hostname);
-        }
-        free(bhMacro);
-        oneshot = 1;
+    bhMacro = rpmExpand("%{?_buildhost}", NULL);
+    if (strcmp(bhMacro, "") != 0) {
+        rasprintf(&hostname, "%s", bhMacro);
+    } else {
+        hostname = rcalloc(1024, sizeof(*hostname));
+        (void) gethostname(hostname, 1024);
+        hbn = gethostbyname(hostname);
+        if (hbn)
+            strcpy(hostname, hbn->h_name);
+        else
+            rpmlog(RPMLOG_WARNING,
+                    _("Could not canonicalize hostname: %s\n"), hostname);
     }
+    free(bhMacro);
     return(hostname);
 }
 
@@ -494,7 +487,7 @@ static rpmRC writeRPM(Package pkg, unsigned char ** pkgidp,
 
     /* Create and add the cookie */
     if (cookie) {
-	rasprintf(cookie, "%s %d", buildHost(), (int) (*getBuildTime()));
+	rasprintf(cookie, "%s %d", buildHost, buildTime);
 	headerPutString(pkg->header, RPMTAG_COOKIE, *cookie);
     }
 
@@ -633,7 +626,7 @@ static rpmRC checkPackages(char *pkgcheck)
     return RPMRC_OK;
 }
 
-static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int cheating, char** filename)
+static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int cheating, char** filename, rpm_time_t buildTime, const char* buildHost)
 {
 	const char *errorString;
 	rpmRC rc = RPMRC_OK;
@@ -652,8 +645,8 @@ static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int ch
 	headerCopyTags(spec->packages->header, pkg->header, copyTags);
 	
 	headerPutString(pkg->header, RPMTAG_RPMVERSION, VERSION);
-	headerPutString(pkg->header, RPMTAG_BUILDHOST, buildHost());
-	headerPutUint32(pkg->header, RPMTAG_BUILDTIME, getBuildTime(), 1);
+	headerPutString(pkg->header, RPMTAG_BUILDHOST, buildHost);
+	headerPutUint32(pkg->header, RPMTAG_BUILDTIME, &buildTime, 1);
 
 	if (spec->sourcePkgId != NULL) {
 	    headerPutBin(pkg->header, RPMTAG_SOURCEPKGID, spec->sourcePkgId,16);
@@ -695,7 +688,7 @@ static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int ch
 	    free(binRpm);
 	}
 
-	rc = writeRPM(pkg, NULL, *filename, NULL);
+	rc = writeRPM(pkg, NULL, *filename, NULL, buildTime, buildHost);
 	if (rc == RPMRC_OK) {
 	    /* Do check each written package if enabled */
 	    char *pkgcheck = rpmExpand("%{?_build_pkgcheck} ", *filename, NULL);
@@ -720,6 +713,8 @@ static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const c
     struct binaryPackageTaskData *tasks = NULL;
     struct binaryPackageTaskData *task = NULL;
     struct binaryPackageTaskData *prev = NULL;
+    rpm_time_t buildTime = getBuildTime();
+    char *host = buildHost();
 
     for (Package pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
         task = rcalloc(1, sizeof(*task));
@@ -727,7 +722,7 @@ static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const c
         if (pkg == spec->packages) {
             // the first package needs to be processed ahead of others, as they copy
             // changelog data from it, and so otherwise data races would happen
-            task->result = packageBinary(spec, pkg, cookie, cheating, &(task->filename));
+            task->result = packageBinary(spec, pkg, cookie, cheating, &(task->filename), buildTime, host);
             rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
             tasks = task;
         }
@@ -743,11 +738,12 @@ static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const c
         if (task != tasks)
         #pragma omp task
         {
-            task->result = packageBinary(spec, task->pkg, cookie, cheating, &(task->filename));
+            task->result = packageBinary(spec, task->pkg, cookie, cheating, &(task->filename), buildTime, host);
             rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
         }
     }
 
+    free(host);
     return tasks;
 }
 
@@ -798,16 +794,18 @@ rpmRC packageSources(rpmSpec spec, char **cookie)
     rpmRC rc;
 
     /* Add some cruft */
+    rpm_time_t buildTime = getBuildTime();
+    char* host = buildHost();
     headerPutString(sourcePkg->header, RPMTAG_RPMVERSION, VERSION);
-    headerPutString(sourcePkg->header, RPMTAG_BUILDHOST, buildHost());
-    headerPutUint32(sourcePkg->header, RPMTAG_BUILDTIME, getBuildTime(), 1);
+    headerPutString(sourcePkg->header, RPMTAG_BUILDHOST, host);
+    headerPutUint32(sourcePkg->header, RPMTAG_BUILDTIME, &buildTime, 1);
 
     /* XXX this should be %_srpmdir */
     {	char *fn = rpmGetPath("%{_srcrpmdir}/", spec->sourceRpmName,NULL);
 	char *pkgcheck = rpmExpand("%{?_build_pkgcheck_srpm} ", fn, NULL);
 
 	spec->sourcePkgId = NULL;
-	rc = writeRPM(sourcePkg, &spec->sourcePkgId, fn, cookie);
+	rc = writeRPM(sourcePkg, &spec->sourcePkgId, fn, cookie, buildTime, host);
 
 	/* Do check SRPM package if enabled */
 	if (rc == RPMRC_OK && pkgcheck[0] != ' ') {
@@ -817,5 +815,6 @@ rpmRC packageSources(rpmSpec spec, char **cookie)
 	free(pkgcheck);
 	free(fn);
     }
+    free(host);
     return rc;
 }