$ git clone -n https://src.fedoraproject.org/rpms/rust-x11-clipboard.git /var/lib/mock/f40-build-2260752-54419/root/chroot_tmpdir/scmroot/rust-x11-clipboard
Cloning into '/var/lib/mock/f40-build-2260752-54419/root/chroot_tmpdir/scmroot/rust-x11-clipboard'...
$ git fetch origin 1dc5be1b6aa9e9b1e4e984865df3bbca88ee2dde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-x11-clipboard
 * [new ref]         1dc5be1b6aa9e9b1e4e984865df3bbca88ee2dde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1dc5be1 Update to 0.8.1 (rhbz#2223064)