diff --git a/bin/install b/bin/install
index 14a3105..419157e 100755
--- a/bin/install
+++ b/bin/install
@@ -58,13 +58,13 @@ omf_install() {
     die "Could not clone the repository → ${OMF_PATH}:${OMF_REPO_BRANCH}"
   fi
 
-  local git_rev=$(git -C ${OMF_PATH} rev-parse HEAD) >/dev/null 2>&1
-  local git_upstream=$(git -C ${OMF_PATH} config remote.upstream.url)
+  local git_rev=$(git --git-dir ${OMF_PATH}/.git --work-tree ${OMF_PATH} rev-parse HEAD) >/dev/null 2>&1
+  local git_upstream=$(git --git-dir ${OMF_PATH}/.git --work-tree ${OMF_PATH} config remote.upstream.url)
 
   if [ -z "${git_upstream}" ]; then
-    git -C ${OMF_PATH} remote add upstream ${git_uri}
+    git --git-dir ${OMF_PATH}/.git --work-tree ${OMF_PATH} remote add upstream ${git_uri}
   else
-    git -C ${OMF_PATH} remote set-url upstream ${git_uri}
+    git --git-dir ${OMF_PATH}/.git --work-tree ${OMF_PATH} remote set-url upstream ${git_uri}
   fi
 
   echo "Oh My Fish revision id → ${git_rev}"
diff --git a/pkg/omf/cli/omf.install.fish b/pkg/omf/cli/omf.install.fish
index adaa242..6e71a68 100644
--- a/pkg/omf/cli/omf.install.fish
+++ b/pkg/omf/cli/omf.install.fish
@@ -40,9 +40,7 @@ function omf.install -a type_flag name_or_url
 
   if test -e $OMF_PATH/$target
     echo (omf::dim)"Updating $name_or_url $install_type..."(omf::off)
-    pushd $OMF_PATH/$target
-    omf.repo.pull
-    popd
+    omf.repo.pull $OMF_PATH/$target
     echo (omf::em)"✔ $name_or_url $install_type up to date."(omf::off)
   else
     echo (omf::dim)"Installing $name_or_url $install_type..."(omf::off)
diff --git a/pkg/omf/cli/omf.repo.pull.fish b/pkg/omf/cli/omf.repo.pull.fish
index 139ef70..2c0c0a2 100644
--- a/pkg/omf/cli/omf.repo.pull.fish
+++ b/pkg/omf/cli/omf.repo.pull.fish
@@ -1,42 +1,48 @@
 function omf.repo.pull
-  if test (command git config --get remote.upstream.url)
+  if test (count $argv) -eq 0
+    echo (omf::err)"Argument of omf.repo.pull is the repo path."(omf::off)
+    return $OMF_MISSING_ARG
+  end
+  set -l repo_dir $argv[1]
+
+  if test (command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" config --get remote.upstream.url)
     set repository upstream
   else
     set repository origin
   end
 
-  set initial_branch (command git symbolic-ref -q --short HEAD); or return $OMF_UNKNOWN_ERR
-  set initial_revision (command git rev-parse -q --verify HEAD); or return $OMF_UNKNOWN_ERR
+  set initial_branch (command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" symbolic-ref -q --short HEAD); or return $OMF_UNKNOWN_ERR
+  set initial_revision (command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" rev-parse -q --verify HEAD); or return $OMF_UNKNOWN_ERR
 
-  if not command git diff --quiet
+  if not command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" diff --quiet
     echo (omf::em)"Stashing your changes:"(omf::off)
-    command git status --short --untracked-files
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" status --short --untracked-files
 
-    command git stash save --include-untracked --quiet
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" stash save --include-untracked --quiet
     set stashed true
   end
 
   if test "$initial_branch" != master
-    command git checkout master --quiet
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" checkout master --quiet
   end
 
   # the refspec ensures that '$repository/master' gets updated
-  command git pull --rebase --quiet $repository "refs/heads/master:refs/remotes/$repository/master"
+  command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" pull --rebase --quiet $repository "refs/heads/master:refs/remotes/$repository/master"
   if test $status -eq 2 #SIGINT
-    command git checkout $initial_branch
-    command git reset --hard $initial_revision
-    test "$stashed" = true; and command git stash pop
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" checkout $initial_branch
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" reset --hard $initial_revision
+    test "$stashed" = true; and command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" stash pop
   end
 
   if test "$initial_branch" != master
-    command git checkout $initial_branch --quiet
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" checkout $initial_branch --quiet
   end
 
   if test "$stashed" = true
-    command git stash pop --quiet
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" stash pop --quiet
 
     echo (omf::em)"Restored your changes:"(omf::off)
-    command git status --short --untracked-files
+    command git --git-dir "$repo_dir"/.git --work-tree "$repo_dir" status --short --untracked-files
   end
 
   return 0
diff --git a/pkg/omf/omf.fish b/pkg/omf/omf.fish
index 46ccdb2..1b0f57d 100644
--- a/pkg/omf/omf.fish
+++ b/pkg/omf/omf.fish
@@ -123,9 +123,8 @@ function omf -d "Oh My Fish"
       omf.remove_package $argv[2] ; and refresh
 
     case "u" "up" "upd" "update"
-      pushd $OMF_PATH
       echo (omf::em)"Updating Oh My Fish..."(omf::off)
-      if omf.repo.pull
+      if omf.repo.pull $OMF_PATH
         echo (omf::em)"Oh My Fish is up to date."(omf::off)
       else
         echo (omf::err)"Oh My Fish failed to update."(omf::off)
@@ -133,7 +132,6 @@ function omf -d "Oh My Fish"
       end
       omf.theme (cat $OMF_CONFIG/theme)
       omf.install_package (omf.list_installed_packages)
-      popd
       refresh
 
     case "s" "su" "sub" "submit"