$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Errf.git /var/lib/mock/f40-build-2630499-65672/root/chroot_tmpdir/scmroot/perl-String-Errf
Cloning into '/var/lib/mock/f40-build-2630499-65672/root/chroot_tmpdir/scmroot/perl-String-Errf'...
$ git fetch origin 926576638fbd229a3f7956d939d8d28ac6ae7017:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Errf
 * [new ref]         926576638fbd229a3f7956d939d8d28ac6ae7017 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9265766 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild