$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Float.git /var/lib/mock/f42-build-side-1-3498672-45963/root/chroot_tmpdir/scmroot/perl-Data-Float
Cloning into '/var/lib/mock/f42-build-side-1-3498672-45963/root/chroot_tmpdir/scmroot/perl-Data-Float'...
$ git fetch origin 22b63070f594159be8bda688e150442e5aaf1264:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Float
 * [new ref]         22b63070f594159be8bda688e150442e5aaf1264 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22b6307 0.015 bump