$ git clone -n https://src.fedoraproject.org/rpms/rust-rand0.4.git /var/lib/mock/f39-build-1494352-34542/root/chroot_tmpdir/scmroot/rust-rand0.4
Cloning into '/var/lib/mock/f39-build-1494352-34542/root/chroot_tmpdir/scmroot/rust-rand0.4'...
$ git fetch origin 06382ff1756478c0ee202a3f4b25a5a1698b25aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand0.4
 * [new ref]         06382ff1756478c0ee202a3f4b25a5a1698b25aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06382ff Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild