$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-CPU.git /var/lib/mock/f40-build-2665408-67099/root/chroot_tmpdir/scmroot/perl-Sys-CPU
Cloning into '/var/lib/mock/f40-build-2665408-67099/root/chroot_tmpdir/scmroot/perl-Sys-CPU'...
$ git fetch origin 4b77fbf7ca6177bd900961d496d58d3e3eb1ff38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-CPU
 * [new ref]         4b77fbf7ca6177bd900961d496d58d3e3eb1ff38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b77fbf Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild