$ git clone -n https://src.fedoraproject.org/rpms/rocksndiamonds.git /var/lib/mock/f40-build-792858-138672/root/chroot_tmpdir/scmroot/rocksndiamonds
Cloning into '/var/lib/mock/f40-build-792858-138672/root/chroot_tmpdir/scmroot/rocksndiamonds'...
$ git fetch origin 7893451a78fd60fc48097631e7c1758c835b8bfe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rocksndiamonds
 * [new ref]         7893451a78fd60fc48097631e7c1758c835b8bfe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7893451 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild