$ git clone -n https://github.com/fedora-riscv/folly.git /var/lib/mock/f40-build-2575835-62277/root/chroot_tmpdir/scmroot/folly
Cloning into '/var/lib/mock/f40-build-2575835-62277/root/chroot_tmpdir/scmroot/folly'...
$ git fetch origin e5fecee9ea3547840497897272ae30db42e47182:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/folly
 * [new ref]         e5fecee9ea3547840497897272ae30db42e47182 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5fecee Add riscv64 support.