$ git clone -n https://src.fedoraproject.org/rpms/syslinux.git /var/lib/mock/f40-build-2684632-67987/root/chroot_tmpdir/scmroot/syslinux
Cloning into '/var/lib/mock/f40-build-2684632-67987/root/chroot_tmpdir/scmroot/syslinux'...
$ git fetch origin 7c29f6da91a3375576abdac50ddf04b1be0577aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/syslinux
 * [new ref]         7c29f6da91a3375576abdac50ddf04b1be0577aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c29f6d Fix build with GCC 14