$ git clone -n https://src.fedoraproject.org/rpms/nec2c.git /var/lib/mock/f40-build-2012548-45795/root/chroot_tmpdir/scmroot/nec2c
Cloning into '/var/lib/mock/f40-build-2012548-45795/root/chroot_tmpdir/scmroot/nec2c'...
$ git fetch origin fbb00aab84f449e869e47a6cfe1f13b79766278a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nec2c
 * [new ref]         fbb00aab84f449e869e47a6cfe1f13b79766278a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbb00aa Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild