$ git clone -n https://src.fedoraproject.org/rpms/rust-derive_arbitrary0.4.git /var/lib/mock/f39-build-1516962-35668/root/chroot_tmpdir/scmroot/rust-derive_arbitrary0.4
Cloning into '/var/lib/mock/f39-build-1516962-35668/root/chroot_tmpdir/scmroot/rust-derive_arbitrary0.4'...
$ git fetch origin 206c834a3826534149581537a9b9ed77f49a7aa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive_arbitrary0.4
 * [new ref]         206c834a3826534149581537a9b9ed77f49a7aa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 206c834 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild