diff --git a/rpm/mount-sdcard.spec b/rpm/mount-sdcard.spec
index 61a6081..4cc7f4e 100644
--- a/rpm/mount-sdcard.spec
+++ b/rpm/mount-sdcard.spec
@@ -1,37 +1,54 @@
+%global branch sfos340
 Name:          mount-sdcard
 Summary:       Enhanced mounting scripts for media as SD-cards
 Version:       1.8.2
-# Since v1.4.2, the release version consists of two or three fields, separated by a dot ("."):
-# - The first field must contain a natural number greater than zero.
-#   This number may be prefixed by one of {alpha,beta,rc,release}, e.g. "alpha13".
-# - The second field indicates the minimal required SailfishOS version A.B.C.X in the format "sfosABC";
-#   the fourth field of a SailfishOS version ("X") is neither depended upon or denoted.
-# - An optional third field might be used by downstream packagers, who alter the package but want to
-#   retain the exact version number.  It should consist of the packager's name appended with a natural 
-#   number greater than zero as the packaging release number, e.g "joe8".
-Release:       1.sfos340
+# Since v1.8.2, the release version consists of two or three fields, separated
+# by dots ("."):
+# - The first field must contain a natural number greater than zero.  This number
+#   should be prefixed by one of {alpha,beta,rc,release}, which results in, e.g.,
+#   "alpha42".
+# - The second field must contain the git branch from which this release is
+#   built; it comprises the minimal required SailfishOS version A.B.C.X in the
+#   format "sfosABC" (the fourth field of a SailfishOS version ("X") is neither
+#   depended upon or denoted) plus if this is a version which utilises
+#   Qualcomm's `qcrypto` kernel module by appending "+qcrypto" to this field.
+# - An optional third field might be used by downstream packagers, who alter the
+#   package but want to retain the exact version number.  It should consist of
+#   the packager's name appended with a natural number greater than zero as the
+#   packaging release number, e.g "jane23".
+Release:       beta1.%{branch}
+# Since v1.8.2, Git tags must adhere to the following format starting (adapted
+# from Storeman's format:
+# https://github.com/storeman-developers/harbour-storeman/wiki/Git-tag-format ),
+# which comprises two fields separated by a slash ("/"):
+# - The first field is simply the content of the `Release:` tag, i.e.,
+#   `%%{release}`.
+# - The second field is simply the content of the `Version:` tag, i.e.,
+#   `%%{version}`.
 Group:         System/Base
 Distribution:  SailfishOS
 Vendor:        olf
-Packager:      olf
 License:       LGPL-2.1-only
 URL:           https://github.com/Olf0/%{name}
-# Download URLs for gzipped tarballs at GitHub must conform to: %{url}/archive/<tag-name>/<arbitrary-string>.tar.gz
-Source:        %{url}/archive/%{version}-%{release}/%{name}-%{version}.tar.gz
-# rpmbuild (as of v4.14.1) handles the Icon tag awkwardly and in contrast to the Source tag(s):
-# It only accepts a GIF or XPM file (a path is stripped to its basename) in the SOURCES directory
-# (but not inside a tarball there)!  Successfully tested GIF89a and XPMv3, but an XPM icon results
-# in bad visual quality and large file size.
+# Download URLs for gzipped tarballs at GitHub must conform to:
+# %%{url}/archive/<tag-name>/<arbitrary-string>.tar.gz
+Source0:       %{url}/archive/%{release}/%{version}/%{name}-%{version}.tar.gz
+# rpmbuild (as of v4.14.1) handles the Icon tag awkwardly and in contrast to
+# the Source tag(s): It only accepts a GIF or XPM file (a path is stripped to
+# its basename) in the SOURCES directory (but not inside a tarball there)!
+# Successfully tested GIF89a and XPMv3, but an XPM icon results in bad visual
+# quality and large file size.
 # Hence only to be used, when the file (or a symlink to it) is put there:
 #Icon:          smartmedia_unmount.256x256.gif
 BuildArch:     noarch
 Requires:      systemd
 Requires:      udisks2
-# Better use direct dependencies on specific versions than indirect ones (here: the line above
-# versus the one below) in general, but ultimately decided not to do so in this special case
-# (for commonality across release versions):
+# Better use direct dependencies on specific versions than indirect ones (here:
+# the line above versus the one below) in general, but ultimately decided not to
+# do so in this special case (for commonality across release versions):
 Requires:      sailfish-version >= 3.4.0
-# Omit anti-dependency on future, untested SFOS versions, until a known conflict exists:
+# Omit anti-dependency on future, untested SFOS versions, until a known conflict
+# exists:
 # Requires:      sailfish-version < 99.99.99
 
 %description
@@ -55,7 +72,7 @@ Url:
 %endif
 
 %define _binary_payload w6.gzdio
-%define _source_payload w2.gzdio
+%define _source_payload w6.gzdio
 
 %prep
 %setup -q