diff --git a/Documentation/git-repack.txt b/Documentation/git-repack.txt
index 0bf13893d8..230f176e10 100644
--- a/Documentation/git-repack.txt
+++ b/Documentation/git-repack.txt
@@ -137,6 +137,13 @@ depth is 4095.
 	a larger and slower repository; see the discussion in
 	`pack.packSizeLimit`.
 
+--filter=<filter-spec>::
+	Omits certain objects (usually blobs) from the resulting
+	packfile. WARNING: this could easily corrupt the current repo
+	and lose data if ANY of the omitted objects hasn't been
+	already pushed to a remote. See linkgit:git-rev-list[1] for
+	valid `<filter-spec>` forms.
+
 -b::
 --write-bitmap-index::
 	Write a reachability bitmap index as part of the repack. This
diff --git a/builtin/repack.c b/builtin/repack.c
index a5bacc7797..0a93f38da4 100644
--- a/builtin/repack.c
+++ b/builtin/repack.c
@@ -17,6 +17,7 @@
 #include "pack.h"
 #include "pack-bitmap.h"
 #include "refs.h"
+#include "prompt.h"
 
 #define ALL_INTO_ONE 1
 #define LOOSEN_UNREACHABLE 2
@@ -50,6 +51,7 @@ struct pack_objects_args {
 	const char *depth;
 	const char *threads;
 	const char *max_pack_size;
+	const char *filter;
 	int no_reuse_delta;
 	int no_reuse_object;
 	int quiet;
@@ -201,6 +203,8 @@ static void prepare_pack_objects(struct child_process *cmd,
 		strvec_pushf(&cmd->args, "--threads=%s", args->threads);
 	if (args->max_pack_size)
 		strvec_pushf(&cmd->args, "--max-pack-size=%s", args->max_pack_size);
+	if (args->filter)
+		strvec_pushf(&cmd->args, "--filter=%s", args->filter);
 	if (args->no_reuse_delta)
 		strvec_pushf(&cmd->args, "--no-reuse-delta");
 	if (args->no_reuse_object)
@@ -268,6 +272,13 @@ static unsigned populate_pack_exts(char *name)
 	return ret;
 }
 
+static void write_promisor_file_1(char *p)
+{
+	char *promisor_name = mkpathdup("%s-%s.promisor", packtmp, p);
+	write_promisor_file(promisor_name, NULL, 0);
+	free(promisor_name);
+}
+
 static void repack_promisor_objects(const struct pack_objects_args *args,
 				    struct string_list *names)
 {
@@ -299,7 +310,6 @@ static void repack_promisor_objects(const struct pack_objects_args *args,
 	out = xfdopen(cmd.out, "r");
 	while (strbuf_getline_lf(&line, out) != EOF) {
 		struct string_list_item *item;
-		char *promisor_name;
 
 		if (line.len != the_hash_algo->hexsz)
 			die(_("repack: Expecting full hex object ID lines only from pack-objects."));
@@ -316,13 +326,8 @@ static void repack_promisor_objects(const struct pack_objects_args *args,
 		 * concatenate the contents of all .promisor files instead of
 		 * just creating a new empty file.
 		 */
-		promisor_name = mkpathdup("%s-%s.promisor", packtmp,
-					  line.buf);
-		write_promisor_file(promisor_name, NULL, 0);
-
+		write_promisor_file_1(line.buf);
 		item->util = (void *)(uintptr_t)populate_pack_exts(item->string);
-
-		free(promisor_name);
 	}
 	fclose(out);
 	if (finish_command(&cmd))
@@ -786,6 +791,8 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
 				N_("limits the maximum number of threads")),
 		OPT_STRING(0, "max-pack-size", &po_args.max_pack_size, N_("bytes"),
 				N_("maximum size of each packfile")),
+		OPT_STRING(0, "filter", &po_args.filter, N_("args"),
+				N_("object filtering")),
 		OPT_BOOL(0, "pack-kept-objects", &pack_kept_objects,
 				N_("repack objects in packs marked with .keep")),
 		OPT_STRING_LIST(0, "keep-pack", &keep_pack_list, N_("name"),
@@ -818,6 +825,24 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
 			die(_("options '%s' and '%s' cannot be used together"), "--cruft", "-k");
 	}
 
+	if (po_args.filter) {
+		const char *yesno;
+
+		if (!isatty(STDIN_FILENO))
+			die (_("Repacking with a filter is not allowed "
+			       "yet unless a terminal is used!"));
+
+		/*
+		 * TRANSLATORS: Make sure to include [y] and [N] in your translation.
+		 * The program will only accept English input at this point.
+		 */
+		yesno = git_prompt(_("Repacking with a filter will lose data and corrupt the repo\n"
+				     "if ANY of the filtered out object hasn't been already pushed!\n"
+				     "Repack with a filter anyway [y/N]? "), PROMPT_ECHO);
+		if (tolower(*yesno) != 'y')
+			exit(1);
+	}
+
 	if (write_bitmaps < 0) {
 		if (!write_midx &&
 		    (!(pack_everything & ALL_INTO_ONE) || !is_bare_repository()))
@@ -955,6 +980,8 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
 		if (line.len != the_hash_algo->hexsz)
 			die(_("repack: Expecting full hex object ID lines only from pack-objects."));
 		string_list_append(&names, line.buf);
+		if (po_args.filter)
+			write_promisor_file_1(line.buf);
 	}
 	fclose(out);
 	ret = finish_command(&cmd);
diff --git a/t/t7700-repack.sh b/t/t7700-repack.sh
index ca45c4cd2c..f8764d1dd9 100755
--- a/t/t7700-repack.sh
+++ b/t/t7700-repack.sh
@@ -237,6 +237,11 @@ test_expect_success 'auto-bitmaps do not complain if unavailable' '
 	test_must_be_empty actual
 '
 
+test_expect_success 'repacking with a filter is not allowed' '
+	test_must_fail git repack -a -d --filter=blob:none 2>actual &&
+	test_i18ngrep "Repacking with a filter is not allowed" actual
+'
+
 objdir=.git/objects
 midx=$objdir/pack/multi-pack-index
 
