$ git clone -n https://src.fedoraproject.org/rpms/rust-tokei.git /var/lib/mock/f41-build-side-1-2968046-35816/root/chroot_tmpdir/scmroot/rust-tokei
Cloning into '/var/lib/mock/f41-build-side-1-2968046-35816/root/chroot_tmpdir/scmroot/rust-tokei'...
$ git fetch origin 07e09b8d081296bd5b75371806fbf6e3133c0edb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tokei
 * [new ref]         07e09b8d081296bd5b75371806fbf6e3133c0edb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07e09b8 Remove reference to readme file that is not included in published crates