$ git clone -n https://src.fedoraproject.org/rpms/python-setuptools-rust.git /var/lib/mock/f40-build-2651998-66890/root/chroot_tmpdir/scmroot/python-setuptools-rust
Cloning into '/var/lib/mock/f40-build-2651998-66890/root/chroot_tmpdir/scmroot/python-setuptools-rust'...
$ git fetch origin 12f6c67e271f6bd4d1767139c29b162d3971db4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-setuptools-rust
 * [new ref]         12f6c67e271f6bd4d1767139c29b162d3971db4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12f6c67 Fix inaccurate RHEL comment