$ git clone -n https://src.fedoraproject.org/rpms/flat-remix-theme.git /var/lib/mock/f40-build-2693617-69006/root/chroot_tmpdir/scmroot/flat-remix-theme
Cloning into '/var/lib/mock/f40-build-2693617-69006/root/chroot_tmpdir/scmroot/flat-remix-theme'...
$ git fetch origin 510a10f943b22e865d9edcccb827d8a6e750a6c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flat-remix-theme
 * [new ref]         510a10f943b22e865d9edcccb827d8a6e750a6c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 510a10f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild