$ git clone -n https://src.fedoraproject.org/rpms/perl-Date-Tiny.git /var/lib/mock/f39-build-1485352-34458/root/chroot_tmpdir/scmroot/perl-Date-Tiny
Cloning into '/var/lib/mock/f39-build-1485352-34458/root/chroot_tmpdir/scmroot/perl-Date-Tiny'...
$ git fetch origin 57ff32f57f231ba4ddaaa819e26e0fe36d0bb0f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Date-Tiny
 * [new ref]         57ff32f57f231ba4ddaaa819e26e0fe36d0bb0f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57ff32f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild