Is there any OS builtin git command like svnlite ?

Hi all,

I'm working on clean installed VM -current from NFS
mounted src like :

admin_at_tbedfc:~ % df -h
Filesystem                                          Size    Used   Avail Capacity  Mounted on
/dev/vtbd0p2                                         11G    4.1G    5.7G    42%    /
devfs                                               1.0K    1.0K      0B   100%    /dev
vm.tfc:/.dake                                        12T    843G     11T     7%    /.dake
vm.tfc:/ds/src/freebsd/current/14.0/913e7dc3e0eb     11T     55G     11T     0%    /usr/src
vm.tfc:/ds/obj/freebsd/current/14.0/913e7dc3e0eb     11T    322G     11T     3%    /usr/obj
admin_at_tbedfc:~ % 

But could not display revison by uname :

admin_at_tbedfc:~ % uname -a
FreeBSD tbedfc 14.0-CURRENT FreeBSD 14.0-CURRENT #0: Fri Mar 12 18:16:41 JST 2021     root_at_tbedfc:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64
admin_at_tbedfc:~ % 

I think this is because incapable of using git command with
`git -C $SRCDIR rev-parse --verify --short HEAD'. In the
first place, git command does not builtin src like svnlite.
Is there any solution of this ? My build environment is as
follows :

admin_at_tbedfc:~ % cat /etc/fstab
# Device        Mountpoint      FStype  Options Dump    Pass#
/dev/vtbd0p2    /               ufs     rw      1       1
/dev/vtbd0p3    none            swap    sw      0       0
vm.tfc:/.dake   /.dake          nfs     rw      0       0
vm.tfc:/ds/src/freebsd/current/14.0/913e7dc3e0eb        /usr/src        nfs     ro,nolockd      0  0
vm.tfc:/ds/obj/freebsd/current/14.0/913e7dc3e0eb        /usr/obj        nfs     rw      0       0
admin_at_tbedfc:~ % cat /etc/src.conf
WITHOUT_REPRODUCIBLE_BUILD=yes
admin_at_tbedfc:~ % 

Regards

---
Kazuhiko Kiriyama <kiri_at_truefc.org>