$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-CPU.git /var/lib/mock/f40-build-2255230-54244/root/chroot_tmpdir/scmroot/perl-Sys-CPU
Cloning into '/var/lib/mock/f40-build-2255230-54244/root/chroot_tmpdir/scmroot/perl-Sys-CPU'...
$ git fetch origin 9fc4ea184bfef729e708b5f3c8d349d7d11532ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-CPU
 * [new ref]         9fc4ea184bfef729e708b5f3c8d349d7d11532ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fc4ea1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild