gnu: emacs-bash-completion: Update to 3.1.1-0.796a806.

* gnu/packages/emacs-xyz.scm (emacs-bash-completion): Update to 3.1.1-0.796a806.
[phases]: Delete make-git-checkout-writable phase.

gnu/packages/emacs-xyz.scm

@@ -19458,26 +19458,28 @@ (define-public emacs-helm-slack
       (license license:gpl3+))))
 
 (define-public emacs-bash-completion
+  ;; This commit includes unreleased fixes that make using completion inside
+  ;; 'guix shell' possible (see:
+  ;; https://github.com/szermatt/emacs-bash-completion/issues/62).
+  (let ((commit "796a806c5531fc20afea590ba3c1d8a42fb793fc")
+        (revision "0"))
     (package
       (name "emacs-bash-completion")
-    (version "3.1.1")
+      (version (git-version "3.1.1" revision commit))
       (source
        (origin
          (method git-fetch)
          (uri (git-reference
                (url "https://github.com/szermatt/emacs-bash-completion")
-             (commit (string-append "v" version))))
+               (commit commit)))
          (file-name (git-file-name name version))
          (sha256
-        (base32 "0cly0m6msn8xv9857nv4syw8fldqzvsa4kciq7av40y26a61hvrh"))))
+          (base32 "13mdb5arifkwghdclvp23q336n49x2hgqnll7m1lg3nh6jgq8jvk"))))
       (build-system emacs-build-system)
       (arguments
        (list
         #:phases
         #~(modify-phases %standard-phases
-          (add-after 'unpack 'make-git-checkout-writable
-            (λ _
-              (for-each make-file-writable (find-files "."))))
             (add-before 'install 'configure
               (lambda* (#:key inputs #:allow-other-keys)
                 (emacs-substitute-variables "bash-completion.el"
@@ -19489,7 +19491,7 @@ (define-public emacs-bash-completion
       (description
        "Bash Completion defines dynamic completion hooks for Shell mode and
 @code{shell-command} prompts that are based on Bash completion.")
-    (license license:gpl2+)))
+      (license license:gpl2+))))
 
 (define-public emacs-easy-kill
   (package