$ git clone -n https://src.fedoraproject.org/rpms/rust-pyproject-toml.git /var/lib/mock/f40-build-2116253-50705/root/chroot_tmpdir/scmroot/rust-pyproject-toml
Cloning into '/var/lib/mock/f40-build-2116253-50705/root/chroot_tmpdir/scmroot/rust-pyproject-toml'...
$ git fetch origin 168bbd834d210db12c6395c8475a41921dce2ce3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyproject-toml
 * [new ref]         168bbd834d210db12c6395c8475a41921dce2ce3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 168bbd8 Update to version 0.8.1; Fixes RHBZ#2213530