$ git clone -n https://src.fedoraproject.org/rpms/python-setuptools-rust.git /var/lib/mock/f40-build-2246958-53842/root/chroot_tmpdir/scmroot/python-setuptools-rust
Cloning into '/var/lib/mock/f40-build-2246958-53842/root/chroot_tmpdir/scmroot/python-setuptools-rust'...
$ git fetch origin 549cb8e21df0a72258015c8a20f947000ea61f8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-setuptools-rust
 * [new ref]         549cb8e21df0a72258015c8a20f947000ea61f8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 549cb8e Fix inaccurate RHEL comment