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diff --git a/guix/forge/build/git.scm b/guix/forge/build/git.scm
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+;;; guix-forge --- Guix software forge meta-service
+;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of guix-forge.
+;;;
+;;; guix-forge is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published
+;;; by the Free Software Foundation, either version 3 of the License,
+;;; or (at your option) any later version.
+;;;
+;;; guix-forge is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with guix-forge.  If not, see
+;;; <https://www.gnu.org/licenses/>.
+
+(define-module (forge build git)
+  #:use-module (rnrs exceptions)
+  #:use-module (guix build utils)
+  #:use-module (guix store)
+  #:use-module (guix utils)
+  #:export (download-git-to-store
+            latest-git-checkout))
+
+;;;
+;;; Commentary:
+;;;
+;;; This module provides build-side code to download a git repository
+;;; to the store.
+;;;
+
+;;; Code:
+
+(define (hline)
+  "Print a horizontal line 50 '=' characters long."
+  (display (make-string 50 #\=))
+  (newline)
+  (force-output))
+
+(define* (download-git-to-store store name url #:key branch show-commit?)
+  "Download BRANCH of git repository from URL to STORE under NAME and
+return store path. If BRANCH is not specified, the default branch is
+downloaded. git and certificates should be in the environment."
+  (call-with-temporary-directory
+   (lambda (directory)
+     (with-directory-excursion directory
+       (guard (condition ((invoke-error? condition)
+                          (format (current-error-port)
+                                  "'~a~{ ~a~}' failed with exit code ~a~%"
+                                  (invoke-error-program condition)
+                                  (invoke-error-arguments condition)
+                                  (invoke-error-exit-status condition))
+                          (exit #f)))
+         (apply invoke
+                "git" "clone" "--quiet" "--depth" "1"
+                ;; Append file:// to local repository path so that
+                ;; shallow clone works.
+                (if (string-prefix? "/" url)
+                    (string-append "file://" url)
+                    url)
+                (append (if branch
+                            (list "--branch" branch)
+                            (list))
+                        (list "."))))
+       (when show-commit?
+         (hline)
+         (invoke "git" "--no-pager" "log")
+         (hline))
+       (delete-file-recursively ".git"))
+     (add-to-store store name #t "sha256" directory))))
+
+(define latest-git-checkout
+  (store-lift download-git-to-store))