$ git clone -n https://src.fedoraproject.org/rpms/rust-fast-srgb8.git /var/lib/mock/f40-build-2654338-66906/root/chroot_tmpdir/scmroot/rust-fast-srgb8
Cloning into '/var/lib/mock/f40-build-2654338-66906/root/chroot_tmpdir/scmroot/rust-fast-srgb8'...
$ git fetch origin bdb94d023924bda929ab55e5734412478f480829:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fast-srgb8
 * [new ref]         bdb94d023924bda929ab55e5734412478f480829 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdb94d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild