$ git clone -n https://src.fedoraproject.org/rpms/rust-byte-unit3.git /var/lib/mock/f40-build-2091732-50241/root/chroot_tmpdir/scmroot/rust-byte-unit3
Cloning into '/var/lib/mock/f40-build-2091732-50241/root/chroot_tmpdir/scmroot/rust-byte-unit3'...
$ git fetch origin 3249f28de73906eb1aaed8b885e1415568016c67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-byte-unit3
 * [new ref]         3249f28de73906eb1aaed8b885e1415568016c67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3249f28 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild