$ git clone -n https://src.fedoraproject.org/rpms/ccache.git /var/lib/mock/f40-build-2151867-50906/root/chroot_tmpdir/scmroot/ccache
Cloning into '/var/lib/mock/f40-build-2151867-50906/root/chroot_tmpdir/scmroot/ccache'...
$ git fetch origin 60cfed36015ca588b6e1577bddf14b3f0b87a006:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ccache
 * [new ref]         60cfed36015ca588b6e1577bddf14b3f0b87a006 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60cfed3 Update to 4.8.3