$ git clone -n https://src.fedoraproject.org/rpms/rust-random-fast-rng.git /var/lib/mock/f39-build-1466101-33646/root/chroot_tmpdir/scmroot/rust-random-fast-rng
Cloning into '/var/lib/mock/f39-build-1466101-33646/root/chroot_tmpdir/scmroot/rust-random-fast-rng'...
$ git fetch origin c36a73a44d91442ba813a6a25b29ac0f223f707e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-random-fast-rng
 * [new ref]         c36a73a44d91442ba813a6a25b29ac0f223f707e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c36a73a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild