$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3-macros.git /var/lib/mock/f38-build-side-43-rust-devel-1397732-31053/root/chroot_tmpdir/scmroot/rust-pyo3-macros
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397732-31053/root/chroot_tmpdir/scmroot/rust-pyo3-macros'...
$ git fetch origin b7217ebc396929f00806c130349206e0299cbf34:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3-macros
 * [new ref]         b7217ebc396929f00806c130349206e0299cbf34 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7217eb Update to version 0.19.2; Fixes RHBZ#2228009