$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-CleanNamespaces.git /var/lib/mock/f39-build-1440848-32356/root/chroot_tmpdir/scmroot/perl-Test-CleanNamespaces
Cloning into '/var/lib/mock/f39-build-1440848-32356/root/chroot_tmpdir/scmroot/perl-Test-CleanNamespaces'...
$ git fetch origin 4ecd482e47655203132b56c06df0c599ab610025:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-CleanNamespaces
 * [new ref]         4ecd482e47655203132b56c06df0c599ab610025 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ecd482 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild