$ git clone -n https://src.fedoraproject.org/rpms/perl-STD.git /var/lib/mock/f39-build-1439362-32248/root/chroot_tmpdir/scmroot/perl-STD
Cloning into '/var/lib/mock/f39-build-1439362-32248/root/chroot_tmpdir/scmroot/perl-STD'...
$ git fetch origin 420e8c7c2bfd9674113cd6fd15bca6a06b1d998c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-STD
 * [new ref]         420e8c7c2bfd9674113cd6fd15bca6a06b1d998c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 420e8c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild