$ git clone -n https://src.fedoraproject.org/rpms/rust-pest_generator.git /var/lib/mock/f38-build-side-42-init-devel-1393767-31050/root/chroot_tmpdir/scmroot/rust-pest_generator
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1393767-31050/root/chroot_tmpdir/scmroot/rust-pest_generator'...
$ git fetch origin 6c0f7b1e0aa6df47af8cde9c2f95983020ddf857:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pest_generator
 * [new ref]         6c0f7b1e0aa6df47af8cde9c2f95983020ddf857 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c0f7b1 Update to version 2.7.3; Fixes RHBZ#2236147