$ git clone -n https://src.fedoraproject.org/rpms/perl-Cache-Cache.git /var/lib/mock/f40-build-2015319-46061/root/chroot_tmpdir/scmroot/perl-Cache-Cache
Cloning into '/var/lib/mock/f40-build-2015319-46061/root/chroot_tmpdir/scmroot/perl-Cache-Cache'...
$ git fetch origin 1c63faa7cb9f19aaa10a68e189e7158c0c0d3a18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Cache-Cache
 * [new ref]         1c63faa7cb9f19aaa10a68e189e7158c0c0d3a18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c63faa Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild