$ git clone -n https://github.com/fedora-riscv/poco.git /var/lib/mock/f38-build-side-42-init-devel-681123-26737/root/chroot_tmpdir/scmroot/poco
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-681123-26737/root/chroot_tmpdir/scmroot/poco'...
$ git fetch origin cca4a9f12a01844ca976d898800fc4e2c77b4ef7:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/poco
 * [new ref]         cca4a9f12a01844ca976d898800fc4e2c77b4ef7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cca4a9f Fix atomic link issue on riscv64.