$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Fast.git /var/lib/mock/f40-build-2022314-46800/root/chroot_tmpdir/scmroot/perl-XML-Fast
Cloning into '/var/lib/mock/f40-build-2022314-46800/root/chroot_tmpdir/scmroot/perl-XML-Fast'...
$ git fetch origin 2d0669cf31d0969d6dfd1565e5bb6abcd83ddb5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-Fast
 * [new ref]         2d0669cf31d0969d6dfd1565e5bb6abcd83ddb5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d0669c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild