$ git clone -n https://src.fedoraproject.org/rpms/perl-Authen-Radius.git /var/lib/mock/f39-build-1433723-31885/root/chroot_tmpdir/scmroot/perl-Authen-Radius
Cloning into '/var/lib/mock/f39-build-1433723-31885/root/chroot_tmpdir/scmroot/perl-Authen-Radius'...
$ git fetch origin c6d57f517efa927451cfc1e87a9e8d305e1dded7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Authen-Radius
 * [new ref]         c6d57f517efa927451cfc1e87a9e8d305e1dded7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6d57f5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild