$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Diff.git /var/lib/mock/f40-build-2630467-65669/root/chroot_tmpdir/scmroot/perl-String-Diff
Cloning into '/var/lib/mock/f40-build-2630467-65669/root/chroot_tmpdir/scmroot/perl-String-Diff'...
$ git fetch origin 3fcbdc06aa7a2731bd591bef794d1bb86a0e7b13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Diff
 * [new ref]         3fcbdc06aa7a2731bd591bef794d1bb86a0e7b13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fcbdc0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild