$ git clone -n https://src.fedoraproject.org/rpms/rust-universal-hash.git /var/lib/mock/f39-build-1517417-35727/root/chroot_tmpdir/scmroot/rust-universal-hash
Cloning into '/var/lib/mock/f39-build-1517417-35727/root/chroot_tmpdir/scmroot/rust-universal-hash'...
$ git fetch origin 6640dc219e3bf8055b6cc809b03238cb7f8671e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-universal-hash
 * [new ref]         6640dc219e3bf8055b6cc809b03238cb7f8671e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6640dc2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild