$ git clone -n https://src.fedoraproject.org/rpms/rust-jxl-color.git /var/lib/mock/f40-build-2654443-66906/root/chroot_tmpdir/scmroot/rust-jxl-color
Cloning into '/var/lib/mock/f40-build-2654443-66906/root/chroot_tmpdir/scmroot/rust-jxl-color'...
$ git fetch origin 8e7bc32ceef002a5814c43315f359d0244c8a52f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-jxl-color
 * [new ref]         8e7bc32ceef002a5814c43315f359d0244c8a52f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e7bc32 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild