$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-XML.git /var/lib/mock/f40-build-2309254-57339/root/chroot_tmpdir/scmroot/perl-Test-XML
Cloning into '/var/lib/mock/f40-build-2309254-57339/root/chroot_tmpdir/scmroot/perl-Test-XML'...
$ git fetch origin c7bac7d9598bb4f5fe3c9e8b812e0aa2377fed21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-XML
 * [new ref]         c7bac7d9598bb4f5fe3c9e8b812e0aa2377fed21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7bac7d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild