git: 257da67d2808 - main - git-arc: Fix existence check

The branch main has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=257da67d2808b7abf6c53569532ccf26db3008b0

commit 257da67d2808b7abf6c53569532ccf26db3008b0
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2025-11-27 19:48:31 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2025-11-27 19:49:08 +0000

    git-arc: Fix existence check
    
    Fixes:          b3e53f9fff11 ("git-arc: Don't require devel/arcanist")
    Reviewed by:    markj
    Differential Revision:  https://reviews.freebsd.org/D53942
---
 tools/tools/git/git-arc.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/tools/git/git-arc.sh b/tools/tools/git/git-arc.sh
old mode 100644
new mode 100755
index f33a73334799..eef01b75663e
--- a/tools/tools/git/git-arc.sh
+++ b/tools/tools/git/git-arc.sh
@@ -786,7 +786,7 @@ shift $((OPTIND-1))
 
 [ $# -ge 1 ] || err_usage
 
-which arc >/dev/null 2>&1 || err "arc is required, install devel/arcanist"
+[ -x "${ARC_CMD}" ] || err "arc is required, install devel/arcanist-lib"
 which jq >/dev/null 2>&1 || err "jq is required, install textproc/jq"
 
 if [ "$VERBOSE" ]; then