diff -Nru yadm-3.0.2/debian/changelog yadm-3.0.2/debian/changelog
--- yadm-3.0.2/debian/changelog	2021-01-31 09:48:31.000000000 +0000
+++ yadm-3.0.2/debian/changelog	2021-02-13 17:01:05.000000000 +0000
@@ -1,3 +1,9 @@
+yadm (3.0.2-2) unstable; urgency=medium
+
+  * Add upstream patch to fix bash tab completion.  (Closes: #980754)
+
+ -- Russ Allbery <rra@debian.org>  Sat, 13 Feb 2021 09:01:05 -0800
+
 yadm (3.0.2-1) unstable; urgency=medium
 
   * New upstream version 3.0.2.
diff -Nru yadm-3.0.2/debian/patches/0001-Fix-compatibility-bug-with-Git-completions-318.patch yadm-3.0.2/debian/patches/0001-Fix-compatibility-bug-with-Git-completions-318.patch
--- yadm-3.0.2/debian/patches/0001-Fix-compatibility-bug-with-Git-completions-318.patch	1970-01-01 00:00:00.000000000 +0000
+++ yadm-3.0.2/debian/patches/0001-Fix-compatibility-bug-with-Git-completions-318.patch	2021-02-13 17:01:05.000000000 +0000
@@ -0,0 +1,43 @@
+From: Tim Byrne <sultan@locehilios.com>
+Date: Sun, 7 Feb 2021 16:30:27 -0600
+Subject: Fix compatibility bug with Git completions (#318)
+
+Git 2.30.0 removed an internal function yadm completion depended upon.
+This change retains the old function call for compatibility.
+---
+ completion/bash/yadm | 14 ++++++++++----
+ 1 file changed, 10 insertions(+), 4 deletions(-)
+
+diff --git a/completion/bash/yadm b/completion/bash/yadm
+index f8cfe87..bb3609d 100644
+--- a/completion/bash/yadm
++++ b/completion/bash/yadm
+@@ -1,10 +1,12 @@
+ # test if git completion is missing, but loader exists, attempt to load
+-if ! declare -F _git > /dev/null && declare -F _completion_loader > /dev/null; then
+-  _completion_loader git
++if ! declare -F _git > /dev/null && ! declare -F __git_wrap__git_main > /dev/null; then
++  if declare -F _completion_loader > /dev/null; then
++    _completion_loader git
++  fi
+ fi
+ 
+ # only operate if git completion is present
+-if declare -F _git > /dev/null; then
++if declare -F _git > /dev/null || declare -F __git_wrap__git_main > /dev/null; then
+ 
+   _yadm() {
+ 
+@@ -66,7 +68,11 @@ if declare -F _git > /dev/null; then
+     if [[ " ${yadm_switches[*]} " != *" $penultimate "* ]]; then
+       # TODO: somehow solve the problem with [--yadm-xxx option] being
+       #       incompatible with what git expects, namely [--arg=option]
+-      _git
++      if declare -F _git > /dev/null; then
++        _git
++      else
++        __git_wrap__git_main
++      fi
+     fi
+     if [[ "$current" =~ ^- ]]; then
+       local matching
diff -Nru yadm-3.0.2/debian/patches/series yadm-3.0.2/debian/patches/series
--- yadm-3.0.2/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ yadm-3.0.2/debian/patches/series	2021-02-13 17:01:05.000000000 +0000
@@ -0,0 +1 @@
+0001-Fix-compatibility-bug-with-Git-completions-318.patch