$ git clone -n https://src.fedoraproject.org/rpms/cosmic-icon-theme.git /var/lib/mock/f45-build-4988-336/root/chroot_tmpdir/scmroot/cosmic-icon-theme
Cloning into '/var/lib/mock/f45-build-4988-336/root/chroot_tmpdir/scmroot/cosmic-icon-theme'...
$ git fetch origin a80b4715b7266b54d5130b8693ae41f0c6dd4b9a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-icon-theme
 * [new ref]         a80b4715b7266b54d5130b8693ae41f0c6dd4b9a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a80b471 Update to 1.8.0