$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Message.git /var/lib/mock/f39-build-1435269-31980/root/chroot_tmpdir/scmroot/perl-HTTP-Message
Cloning into '/var/lib/mock/f39-build-1435269-31980/root/chroot_tmpdir/scmroot/perl-HTTP-Message'...
$ git fetch origin 1117bcf42b12f7c0698d0baf949096e4f1677464:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Message
 * [new ref]         1117bcf42b12f7c0698d0baf949096e4f1677464 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1117bcf Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild