$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell-extension-no-overview.git /var/lib/mock/f39-build-2100314-50453/root/chroot_tmpdir/scmroot/gnome-shell-extension-no-overview
Cloning into '/var/lib/mock/f39-build-2100314-50453/root/chroot_tmpdir/scmroot/gnome-shell-extension-no-overview'...
$ git fetch origin e0faebc5ee0e3aaedab5b9cdcd3f7dd8d3dca975:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-shell-extension-no-overview
 * [new ref]         e0faebc5ee0e3aaedab5b9cdcd3f7dd8d3dca975 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0faebc Bump to 16