$ git clone -n https://src.fedoraproject.org/rpms/rust-input-sys.git /var/lib/mock/f40-build-2100956-50489/root/chroot_tmpdir/scmroot/rust-input-sys
Cloning into '/var/lib/mock/f40-build-2100956-50489/root/chroot_tmpdir/scmroot/rust-input-sys'...
$ git fetch origin 1d301d44937b8482e12a4e88c79d83a3d83b150a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-input-sys
 * [new ref]         1d301d44937b8482e12a4e88c79d83a3d83b150a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d301d4 Initial import; Fixes: RHBZ#2224960