$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3_0.18.git /var/lib/mock/f38-build-side-43-rust-devel-1413804-31445/root/chroot_tmpdir/scmroot/rust-pyo3_0.18
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1413804-31445/root/chroot_tmpdir/scmroot/rust-pyo3_0.18'...
$ git fetch origin 6ba9c0c517b30b56d8ed94f469c15e637f559d31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3_0.18
 * [new ref]         6ba9c0c517b30b56d8ed94f469c15e637f559d31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ba9c0c Initial import (pyo3 0.18 compat package)