$ git clone -n https://src.fedoraproject.org/rpms/python-sphinx-copybutton.git /var/lib/mock/f40-build-2223448-52741/root/chroot_tmpdir/scmroot/python-sphinx-copybutton
Cloning into '/var/lib/mock/f40-build-2223448-52741/root/chroot_tmpdir/scmroot/python-sphinx-copybutton'...
$ git fetch origin fd66c53e1452aa2eed03366269833892f9c787a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinx-copybutton
 * [new ref]         fd66c53e1452aa2eed03366269833892f9c787a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd66c53 Update to 0.5.2 (rhbz#2186733)