$ git clone -n https://src.fedoraproject.org/rpms/libXNVCtrl.git /var/lib/mock/f39-build-1466044-33640/root/chroot_tmpdir/scmroot/libXNVCtrl
Cloning into '/var/lib/mock/f39-build-1466044-33640/root/chroot_tmpdir/scmroot/libXNVCtrl'...
$ git fetch origin 81a8927cd47039719c6a4b73be03126331cc26e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXNVCtrl
 * [new ref]         81a8927cd47039719c6a4b73be03126331cc26e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81a8927 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild