$ git clone -n https://src.fedoraproject.org/rpms/perl-Mango.git /var/lib/mock/f39-build-1435326-31984/root/chroot_tmpdir/scmroot/perl-Mango
Cloning into '/var/lib/mock/f39-build-1435326-31984/root/chroot_tmpdir/scmroot/perl-Mango'...
$ git fetch origin e45f9c81db52f68a38ad8c9b83c6eb8cdf442ac6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mango
 * [new ref]         e45f9c81db52f68a38ad8c9b83c6eb8cdf442ac6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e45f9c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild