$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-Statistics-Linux.git /var/lib/mock/f40-build-2021028-46682/root/chroot_tmpdir/scmroot/perl-Sys-Statistics-Linux
Cloning into '/var/lib/mock/f40-build-2021028-46682/root/chroot_tmpdir/scmroot/perl-Sys-Statistics-Linux'...
$ git fetch origin fbd5acd21cc4af05e6563d43130acf3c6a76852f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-Statistics-Linux
 * [new ref]         fbd5acd21cc4af05e6563d43130acf3c6a76852f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbd5acd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild