$ git clone -n https://src.fedoraproject.org/rpms/rust-pyproject-toml.git /var/lib/mock/f42-build-side-1-3581441-46829/root/chroot_tmpdir/scmroot/rust-pyproject-toml
Cloning into '/var/lib/mock/f42-build-side-1-3581441-46829/root/chroot_tmpdir/scmroot/rust-pyproject-toml'...
$ git fetch origin fae9a15c4fa190749dac679f57f2e2dddc0a25d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyproject-toml
 * [new ref]         fae9a15c4fa190749dac679f57f2e2dddc0a25d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fae9a15 Update to version 0.13.5; Fixes RHBZ#2371621